1 In Sliding Screen Door Nylon Center Grooved Rollers 2 Pack Primeline B 552

This patio sliding screen door grille is constructed of aluminum and comes in a white painted finish. The grille is designed to install on the exterior side of 48 in. Wide sliding screen doors to provide child safety, and protect the screen fabric from pet damage. This screen door grille measures 26 in. Tall, and with the fasteners and installation instructions provided it is simple to install. This maintenance-free grille is constructed of superior quality using close weave aluminum mesh supported by strong, extruded aluminum frame material in an attractive styling.

High quality screen door grill. Had to trim mounting tabs on one side to allow the screen to fit into the frame recess.. Edward. Meadow Vista, CA. Mon Jun 23 2025

Prime-Line D 1579-C Sliding Door Repair Track is designed to restore smooth operation to worn or damaged sliding track systems on aluminum doors. This replacement door track cap slips over existing damaged tracks, providing a simple and effective solution to prolong the life of your sliding door. Built to last, the patio track is made of high-quality stainless steel for maximum durability and rust resistance, ensuring long-term performance. Simply prep the existing door tracks, apply a thin bead of silicone glue, and snap the repair track into place using a rubber mallet and block of wood for a secure fit. Each replacement sliding track measures 3/16 inch x 48 inch x 1/4 inch and comes in a convenient 2-pack. For further dimensional information, please see the line drawing before purchasing.

Fit perfectly!. Gordon. Sun Apr 12 2026

This is a white flush mounted handle and latch set used by many patio door manufacturers. It has a steel hook latch with 1 inch standard spacing. This handle set will fit a minimum door thickness of 15/16 inch and up to a maximum thickness of 1-1/8 inch. It is 5-11/16 inch long and 7/8 inch wide with 5-1/8 inch mounting holes. Made of diecast metal, the handles fit flush into the screen door frame with an inside automatic locking feature.

was easy to install.. Gerald. Sacramento, CA. Sat Jun 28 2025

Convert your hinged door into a self-closing door with Prime-Line safety spring door closer. This surface mounted door closer installs in minutes! Use this spring door closer on doors that weigh up to 150 pounds These closers are not handed, so they can be used on both left and right-handed hinged-swinging doors. The door closers feature an adjustable closing force and speed. Constructed of diecast materials with a white painted finish, this safety spring door closer can complement any style door. Each closer is U.L. listed with a 1/2 hour fire rating. These closers operate in a pushing-closed manner, rather than in a pulling-closed method, and they do not have a hold open feature. Distance of travel: The closer arm of this safety spring closer has the ability to swing a full 180 degrees, but once it is mounted in place, the door’s distance of swing will be reduced to the point of where it makes contact with the bullet-shaped housing of the closer. All fasteners and installation instructions are included with this item. For lubrication, avoid using WD-40 which actually breaks down lubricating grease. Instead, apply white lithium grease to internal compressing springs if desired or necessary. Other colors/finishes include: Black, brown, chrome plated and satin chrome plated. For a rust and weather resistant closure, consider model numbers KC50HD (white) and KC57US (brown) which are suitable for outdoor/exterior use, designed for use with lightweight gates and screen doors. Do not overtighten, turning past 4 hole positions will cause this item to fail.

greagt. Stan. Bentonville, AR. Thu Jul 17 2025

This flat edge sliding window roller is constructed from nylon. It comes affixed to a nylon housing. This style roller fits on Guaranteed Products and other similar styled sliding windows.

This bottom track is constructed from roll-formed steel and comes finished in champagne gold. The track can be used for new installs, or to replace missing or damaged bottom tracks of by-passing mirror doors that use convex edge mirror door roller assemblies. They feature a double-grooved track as used by a variety of mirror door manufacturers, and can easily be cut for custom installs. These replacement tracks are sold individually and the installation fasteners are not included.

It was the correct size and fit beautifully. Wheel’s on the closet door slide beautifully on the track Price was great and I love Wayfair Thank you. Carol. Thu May 15 2025

These safety spring-activated door closers are constructed of diecast materials and come in a beautiful finish. They are U.L. listed with a 1/2 hour fire rating and can be used to close doors weighing up to 150 lbs. These closers feature an adjustable closing speed and they are non-handed, allowing them to be used on both left and right-handed swinging doors. Both the closer and the plastic slide plate are surface-mounted and are easy to install. These closers operate in a pushing-closed manner, rather than in a pulling-closed method, and they do not have a hold-open feature. Distance of travel: The closer arm of this safety spring closer has the ability to swing a full 180 degrees, but once it is mounted in place, the door’s distance of swing will be reduced to the point where it makes contact with the bullet-shaped housing of the closer. For a rust and weather resistant closure, consider Prime-Line parts KC50HD (white) and KC57US (brown) which are suitable for outdoor/exterior use, designed for use with lightweight gates and screen doors. All fasteners and installation instructions are included with this item. Other colors/finishes include: black, white, brown, and chrome plated. Be sure to view the manufacturer’s How-To Installation Video also linked to this page, in the upper left-hand corner. Application of white lithium grease to internal compressing springs may be desired, but you should avoid using lubricants like WD-40 which breaks down lubricating grease. Do not overtighten, turning past 4 hole positions will cause this item to fail.

Looks very good construction.. O. Etobicoke, ON. Wed Feb 01 2023

This ADA compliant slide latch is constructed of stamped stainless steel and comes in a satin finish. It is a surface-mounted latch that is designed for use on 1 in. thick swing-in partition doors, and it comes complete with an "occupied" indicator and a matching stainless steel keeper. The exterior indicator has a dial-type internal mechanism that announces a locked door (or an occupied stall) with red color when the lock is engaged. When the slide lock is in the unlocked position, the dial indicator reveals a green color, or unoccupied state, announcing its availability for use. For access to the locked stall, the exterior indicator also comes equipped with a stainless steel pull and a slotted barrel nut which can disengage the lock from the exterior in the event of an emergency. This latch mounts over a durable, black plastic base with its mounting holes spaced apart at 1-3/8 inches, and it features a 1-3/16 in. bolt throw. This lock includes a stainless steel set screw and steel Allen wrench required for installation. Toilet partition slide latches like these are used by many and they are easy to install.

This is a shower door bottom seal that is constructed of clear vinyl and comes in 36 in. lengths. Designed to attach to the bottom of frameless, swinging shower doors without the need of adhesives. Cutting down to size will be necessary if your shower door measures less than 36 in. in width. No tools are required to install this shower door bottom. For an alternate design, please review the Prime-Line.

what I needed, Solved my problem, I need receipts for the items that I purchased where can I go on line to print them out Thank You. Daniel. Martinez, CA. Sun Feb 22 2026

This Prime-Line Adjustable Sliding Door Lock features a telescopic design that allows it to adjust to fit nearly all standard patio door openings. The lock bar is adjustable to accommodate openings from 28 inch to 48 inch Secure your door in an open position, so you can safely allow fresh air into your home. When not in use, simply swing the metal security bar up and out of the way. Unlike typical patio door patio door lock bar, this door lock stick does not require you to cut the unit down to size with a saw. You simply press in the tension release clip to extend the length or reduce the length. Constructed of aluminum with an aluminum finish, the patio safety bar prevents doors from being forced open. Please refer to the line art drawing for dimensions and compare to your needs before purchasing.

Perfect for securing my sliding glass door. Glad I found it.. Carolyn. Louisville, KY. Sat Feb 21 2026

This is an extruded aluminum sliding doorkeeper. It is surface mounted for hook-style latches. The dimensions are 2-1/2 in. in length, with a 1-1/2 in. width. It is used by Viking doors.

These are 3 in. x 3 in. stick-on fiberglass screen patch for repairing holes and/or small tears in your fiberglass window screens and screen doors. It can be easily attached without using special tools. Easy to follow instructions are included. Each card has five (5) 3 in. x 3 in. patches and each package contains 10 cards. Gray finish.

Anonymous. Wed Nov 27 2024

Are you having trouble sliding your screen door open or closed? Have you checked your rollers/roller assemblies? Don’t replace the entire door. For a fraction of the cost of a new door, replace those worn-out rollers. This is a tension spring roller assembly, with a downward offset tension spring used by Academy and a variety of other sliding patio door manufacturers. The B 638 roller is a 1 Inch high-density polyethylene roller, the B 687 roller has a plastic ball bearing and the B 639 has a steel ball bearing roller with a 1-3/4 Inch long tension spring that is a heat treated steel spring. When installed the bent, or angled, flat spring positions the roller assembly so that an adjusting screw adjusts the height of the roller as needed. For stainless steel roller assembly use Prime-Line part B 756. Order yours today and have your door slide like new.

Anonymous. Wed May 07 2025

Are you having trouble sliding your screen door open or closed? Have you checked your rollers/roller assemblies? Don’t replace the entire door. For a fraction of the cost of a new door, replace those worn-out rollers. This high-tension steel spring roller assembly fits onto the Columbia Uni-Fit series door. This roller assembly has a 1-inch diameter high-density polyethylene roller mounted in the housing. The flat steel spring end catches onto the inside of the door frame while the flat edges of the two tabs extending out in front of the roller restrict the roller from retracting too far up into the door frame as it rolls. This sliding screen door roller assembly insert has a thinner high-density polyethylene frame than the Prime-Line part B 646. It has an adjustable high-density polyethylene inner housing and high-density polyethylene roller. The assembly inserts into the bottom or top of the sliding screen door using the included screws. The roller adjusts to the correct position needed. This style is found on Columbia sliding screen doors but is also used by a variety of other sliding screen door manufacturers. Please note the dimensions and design when compared with an old roller. Order yours today and have your door slide like new.

Are you having trouble sliding your screen door open or closed? Have you checked your rollers/roller assemblies? Don’t replace the entire door. For a fraction of the cost of a new door, replace those worn-out rollers. This is a very popular sliding screen door corner used by Arcadia, Guardian and a variety of other sliding screen door manufacturers. It is diecast with an adjustment screw that would adjust the Prime-Line part B 515 style roller (sold separately) that has been installed onto the corner's roller pivot arms. The diecast corner fits into the sliding screen door frame holding the bottom or top rails and the side stiles together. Order yours today and have your door slide like new.

Are you having trouble sliding your screen door open or closed? Have you checked your rollers/roller assemblies? Don’t replace the entire door. For a fraction of the cost of a new door, replace those worn-out rollers. This insert style sliding screen door assembly has a high density polyethylene housing with a high density polyethylene roller insert. It is used on the Academy Uni-Fit screen doors. The roller is a 1 Inch steel ball bearing roller and is used on the top or the bottom of the door. Easy to install, by inserting into the open U-shaped frame and inserting the screw. For steel ball bearing see Prime-Line part B 624. Order yours today and have your door slide like new.

Restore smooth, effortless operation to your sliding patio door with this Tandem Stainless Steel Roller Assembly. Designed with a unique bottom-mount housing, this roller assembly is commonly used on Andersen sliding patio doors and many other wood patio door brands. It is an ideal choice for homeowners and DIY installers seeking a durable replacement solution. The assembly includes two 1-1/2 inch concave stainless steel ball bearing rollers housed in a corrosion-resistant stainless steel frame. This construction provides strength, durability, and long-lasting performance, especially in coastal or high-humidity environments where rust and corrosion are common issues. The stainless steel housing measures 11/16 inch wide, 1-3/16 inches tall, and 4-5/8 inches long, with a mounting tab at each end for secure installation. It is designed to fit into a mortised pocket in the bottom rail of the door. For added convenience, the roller assembly features a side adjustment mechanism, allowing you to fine-tune the door height and alignment with a standard screwdriver. Whether you are repairing an Andersen sliding door or replacing worn rollers on another wood patio door, this stainless steel roller assembly provides a reliable and long-lasting solution to keep your door gliding smoothly. Please refer to the line art drawing for exact dimensions to ensure compatibility before purchasing, as this is not a universal part.

The Prime-Line K 5051 spring-loaded screen door catch is constructed from high-quality steel with a durable zinc-plated finish, ensuring long-lasting performance and secure closure. Featuring single roller arms, it keeps your screen door firmly shut, preventing unwanted openings caused by loose or worn latches and door closers. Designed for universal compatibility, this catch fits most hinged-swinging screen doors and accommodates various door and casing thicknesses for a versatile installation. Equipped with smooth, no-mar plastic rollers, it protects your door’s finish from scratches while delivering consistent latching and smooth operation. For precise fitting, please refer to the line art drawing to confirm dimensions before purchasing.

This is a combination of a 1-1/8 in. diameter steel concave or grooved ball bearing roller that is 5/16 in. thick with a 1/4 in. axle hole, and a combination of 5 different axle choices. Depending on the situation, you can choose to rivet the roller into place or use a roll pin, drive pin, binder post and screw or bolt and nut. Regardless of how you need to install the new roller into your existing roller housing, in most cases, one of the five choices will work.

This is a sliding glass door roller assembly. It has a 1-1/4 inch outside diameter. Features a steel ball bearing roller with an adjustable diecast housing.

This 1/2 inch steel roller comes secured in a nylon constructed housing. These rollers install two per track and help keep your windows energy efficient. Used on Superlite series 8000 windows.

Are you having trouble sliding your screen door open or closed? Have you checked your rollers/roller assemblies? Don’t replace the entire door. For a fraction of the cost of a new door, replace those worn-out rollers. This spring tension roller assembly is used by DorWal, Guardian as well as a variety of other sliding patio door manufacturers. It has a flat tension spring, steel housing and a 1-1/4 Inch high-density polyethylene roller. The roller installs into the door by snapping onto the existing diecast door frame corner. These can be used as top or bottom rollers. Order yours today and have your door slide like new.

Replace or repair broken or missing sliding door rollers with this Prime-Line D 1998 Steel Sliding Door Roller Assembly. The stamped steel patio door rollers replacement is adjustable. This door roller assembly is used by a variety of metal framed sliding patio door manufacturers. Made of stamped steel housing with a yellow finish, these sliding door rollers are strong, durable, and built to last. The housing of the sliding door rollers replacement is 11/16 inches wide by 1-11/16 inches deep and 2-3/4 inches long. The concave ball bearing steel roller is 1-1/2 inch. A Phillips head screwdriver is required for installation. Use the screw in the front of the housing to adjust ride height. For further roller assembly sliding door dimensional information, please see the line drawing.

This is a side mounted, top hung wardrobe roller assembly with a tandem 7/8 inch convex nylon wheel for the front sliding wardrobe door. The stamped steel bracket assembly is adjustable and has an 1/4 inch offset. It is fitted onto the wardrobe front door and fits 3/4 inch to 1-3/8 inch thick doors. Used by Acme and Stanley door systems, as well as a variety of other wardrobe door manufacturers. For the back wardrobe door roller assembly use Prime-Line part N 6503.

These roller assemblies are constructed of a stamped steel housing and feature a plastic, center grooved (concave) edge wheel. These types of roller assemblies are typically used on wood sliding windows and panels, and require a mortised installation. These roller assemblies fit Glide Master, and they are used by a variety of other manufacturers.

The Prime-Line Sliding Glass Door Handle Set is soundly constructed to ensure its reliability and overall longevity. The non-keyed replacement sliding door handle mounts on the inside frame of an older style door and latches onto an extrusion on the jamb. Easily convert the slide door handle replacement into a keyed cylinder lock to increase the handles functionality and security features. Constructed from diecast extruded aluminum, the sliding door handle replacement comes finished in a stylish finish with woodgrain accents. The handle is the ideal choice for the discerning homeowner looking to enhance their doors style and flair. The handle is a 2 inch tall inside handle. The latch clamp of the handle set has a 1/4 inch profile and 1/2 inch projection when in locked position.

Great fit so glad to be able to fix my door!!!. Judy. Memphis, TN. Sat Mar 04 2023

This Chain Door Lock is constructed of steel components and comes in a beautiful, corrosion-resistant, classic bronze finish. Typically these are used on inswing doors that you may want extra security on. With this door guard properly installed you can safely and securely either vent the room or open your door slightly. All the necessary mounting hardware is included for a quick and easy installation. Additionally this can be used as a child safety lock if mounted high enough for your child to not be able to reach.

This is a 34-1/2 inch molded plastic screen door grille that allows for maximum screen coverage on standard 30 inch to 36 inch sliding screen door. Proper installation of grille adds strength to entire door and helps prevent screen fabric damage. Molded plastic grille body measures 26-1/8 inch wide x 20 inch tall. The tabs extend 4-1/8 inch and can be easily trimmed. Molded white plastic construction.

This has been perfect for keeping the screen porch door protected from dogs and kids. My husband is happy not to have to replace the screen all the time.. Amy Willauer. Kirkwood, NY. Fri Jun 26 2026

Are you having trouble sliding your screen door open or closed? Have you checked your rollers/roller assemblies? Don’t replace the entire door. For a fraction of the cost of a new door, replace those worn-out rollers. This is a tension spring roller assembly, with a downward offset tension spring used by Academy and a variety of other sliding patio door manufacturers. The roller is a 1 Inch high-density polyethylene roller with a 1-3/4 Inch long tension spring that is a heat treated steel spring. When installed the bent, or angled, flat spring positions the roller assembly so that an adjusting screw adjusts the height of the roller as needed. For stainless steel roller assembly use Prime-Line part B 756. Order yours today and have your door slide like new.

Allows for maximum screen coverage on standard 30 to 36-inch sliding screen doors. Proper installation of the grille adds strength to the entire door and helps prevent screen fabric damage. Molded plastic grille body measures 26-1/8 inch wide x 20 inches tall. The tabs extend 4-1/8 inches and can be easily trimmed.

Has your sliding screen handle broken, is it worn out, cracked, damaged or just worn out? This lever is used on a variety of patio door manufacturer's sliding screen doors. It is a diecast metal lever with a nickel finish that features a 2-1/2 inch length and a 1-inch diameter mounting area. When installed properly it engages the internal hook or internal latch body. Order yours today and make your sliding screen door secure again.

This is an extruded aluminum bracket, flat edge steel roller. Most often used on international windows.

This sliding glass door roller assembly is constructed from steel and features a height-adjustable housing. The concaved (grooved) edge wheels installed in these roller assemblies are constructed of plastic and include steel ball bearings for smooth and long-lasting operation. The wheels are designed to glide on a single raised aluminum or steel track. This item includes only one roller assembly per package, but a total of 2 roller assemblies are required for each sliding door. These roller assemblies are used to repair patio sliding doors with missing, damaged or malfunctioning roller assemblies. Installation easy to install with a few simple tools. This style roller is used on Door Master and similar styled patio doors. Refer to dimensional line drawing to match product specifications.

This is a unique one of a kind trolley style roller assembly with two parallel 1-1/4 in. concave steel rollers in a stamped steel housing. Used on Guaranteed Products patio doors, it's unique housing fits into the bottom rail held in place by the two existing screws in the door. Purchase the Prime-Line part D 1548 for the steel roller version.

Had a sliding door that was hard to open.... These rollers worked perfectly! The sliding door now works like a charm. Perfect!!. Beverly B. Orange County, CA. Mon Feb 24 2025

The Prime-Line C 1201 Sliding Patio Door Handle is a non-keyed slide door handle replacement. It is non-handed for use on left or right sliding patio doors. The clamping mechanism on the sliding door handle replacement features a unique extruded aluminum saw-tooth style clamp that engages automatically when the slide door handle is in the locked position, and the door is slid closed. This sliding glass door handle consists of an extruded aluminum inside pull and a diecast constructed outside pull, both in a black- painted finish. The inside pull of the Prime-Line door handle features a decorative wood grain strip and the outside pull sits flush inside the framework of the sliding door panel. The door handle hook has mounting holes 3 inch on center. The clamp style sliding door handle includes mounting hardware. A Phillips head screwdriver is required for installation. Please refer to the line art drawing for dimensions and compare with your needs before purchasing.

Perfect size and it is what i was looking for. Kitae. Bakersfield, CA. Sat Apr 01 2023

This is a sash lock and keeper. Constructed from diecast zinc it comes in a white finish. They are found on a variety of sashes and due to their design are often used as a child safety lock. The slim-line design allows a minimum projection for a maximum unobstructed view. A Phillips head screwdriver will be required for installation.

This is an F-tab patio door roller assembly with a 1 inch concave steel ball bearing roller. When the corner screw passes through the F-tab the assembly is then captured by the side stile and bottom rail as the screw draws the two sides together. The housing is 11/16 inch wide and 1-3/16 inch tall with a 7/8 inch dimple width. Used by Lupton and a variety of other sliding patio door manufacturers.

These are adhesive backed patches. Used to repair holes and tears in screen doors and windows. Contains 5 fiberglass screen patches. They are 3 in. x 3 in. patches in a charcoal color.

Ghislaine. Lachine, QC. Thu Jun 25 2026

These screen frame kits are constructed of roll-formed aluminum frame material and they come in an attractive color. Using the components of this kit a screen frame can be constructed. Additional items included in this kit include the square-cut corners, vinyl spline and a charcoal fiberglass cloth. These kits are available in other sizes and colors, and they are used by many for replacing damaged and missing screens. The screen frame material is intentionally cambered (curved) outward, which helps to prevent inward bowing when screen cloth is installed and stretched taut.

This sliding glass door roller assembly is constructed from steel and features a height-adjustable housing. It is a "K" tab patio door roller assembly with a 1-1/4 in. concave or grooved nylon ball bearing roller. The "K" tab style back end is a T shaped tab that is simply slid up into a similar T shaped receptacle in the bottom of the patio door. No screws are required. The housing is 5/8 in. wide and 1-3/16 in. tall with a flare and 3/4 in. dimple width. The concaved (grooved) edge wheels installed in these roller assemblies are constructed of plastic and include steel ball bearings for smooth and long-lasting operation. The wheels are designed to glide on a single raised aluminum or steel track. This item includes only one roller assembly per package, but a total of 2 roller assemblies are required for each sliding door. These roller assemblies are used to repair patio sliding doors with missing, damaged or malfunctioning roller assemblies. Installation easy to install with a few simple tools. Refer to dimensional line drawing to match product specifications. This style roller is used on International and similar styled patio doors.

These Rear Drawer Track Sockets are constructed from durable plastic and come white in color. It fits on most side mounted drawer track systems. This style of drawer track support brackets accept most ball bearing drawer slides. They feature 5/16 inch wide x 7/8 inch tall x 2-15/16 inch deep openings and 2-3/4 inch socket depth, which allows for front to back adjustment of the drawer slides. Installation is quick and easy, and all fasteners are included. The maximum load rating is 75 pounds per pair.

This double cylinder deadlock is constructed of diecast and it comes in a chrome plated finish. It features a jimmy-resistant design which prohibits forced entry when attempts are made to spread the door away from the frame.

It does the job. It is kind of heavy, but it is effective.. Tiffany. Cocoa, FL. Thu May 29 2025

Are you having trouble sliding your screen door open or closed? Have you checked your rollers/roller assemblies? Don’t replace the entire door. For a fraction of the cost of a new door, replace those worn-out rollers. This is a tension spring roller assembly with an offset, or bent, spring design used by Academy, Metal Industries and a variety of other patio door manufacturers. The roller is a 1 Inch diameter steel ball bearing roller with a tension spring that is a heat treated steel spring. The bent, or angled flat spring installs into the screen door frame so that the roller assembly cushions the door as it rides back and forth. For high density polyethylene rollers use Prime-Line part B 609. Order yours today and have your door slide like new.

This slide latch is constructed of aluminum and it comes in an anodized satin finish. This item includes security fasteners and it is easy to install.

The Prime-Line K 55552 Spring-Loaded Hinges are designed for durability, convenience, and versatility, making them the perfect upgrade for your doors. Constructed from high-quality steelthese heavy-duty hinges provide long-lasting strength and stability. Featuring a powerful spring mechanism, they enable automatic self-closing, ensuring doors shut securely without the need for manual effort—enhancing both safety and convenience. Suitable for a wide range of applications, these hinges are ideal for interior, exterior, storm and screen doors, especially in high-traffic areas. Installation is hassle-free, as each factory-sealed package includes all necessary fasteners for mounting on wooden doors. Before purchasing, please check the line art drawing for precise dimensions to ensure a perfect fit. Upgrade your space with Prime-Line K 55552 for reliable performance and smooth door operation.

This is a white plastic housing with concave tandem steel rollers. Used by a.b.c. Windows. A dual wheel upgrade to the prime-line part g-3038 improves glide and window performance.

Has your sliding screen door handle broken, is it worn out, cracked, been damaged or just worn out? This sliding screen door handle and latch is non-handed and used on 1/2 inch thick Columbia doors, as well as a variety of other patio door manufacturers. It contains an inside pull and outside pull. The handles have mounting holes that are 3 inch on center, and the spring-loaded nylon latch rotates up and down to engage the keeper (not included). Latch can be locked from the inside by the security lock and make the door unable to be opened from the outside. Order yours today and make your sliding screen door secure again.

This is a F-tab patio door roller assembly with a 1-1/4 in. concave steel ball bearing roller. When the corner screw passes through the F-tab it is captured by the side stile and bottom rail as the screw draws the two sides together. The housing is 9/16 in. wide with a flare width of 11/16 in., 1-1/8 in. tall and 1-1/4 in. long (not including the inner roller housing). It has a rear adjusting screw. Used by a variety of patio door manufacturers.