When your sliding door mortise lock is broken or old, don’t replace the door entirely, just get a new mortise lock! This Prime-Line E 2121 Mortise Lock has an adjustable, spring-loaded hook latch projection for surface-mounted sliding patio doors constructed of wood, aluminum and vinyl with handle sets with 45-degree angled keyway positions when in the locked position. It also fits doors using W&F manufactured handles. The mounting hole centers of this lock measures 3-11/16 inch from center to center, and the rear housing corners are square. Selection Tip: To ensure the perfect match is selected prior to purchasing, the lock will need to be removed to compare the following 4 features (besides the width of housing): 1) The distance of the mounting holes measured from center to center, 2) The faceplate ends; rounded or square, 3) The position of the slotted keyway when in the locked position; at 45-degree angle or vertical, and 4) The shape of the housing corners at the rear; square or slanted. Installation Tip: Watch the manufacturer’s How-To Video that is linked to this item page.

This is a mortise lock housing and hook are made of steel, with a round-end faceplate, and mounting holes that are 3-11/16 in. on center. It has a vertical keyway when the hook is fully extended. Each mortise lock is spring-loaded, with an adjustable hook projection. The adjustment screw is on the face of the lock. Typically used by Adams Rite and a variety of other manufacturers.

Linnea elevates architectural hardware by crafting high-quality stainless steel products in contemporary designs, whose features are fine-tuned to reflect our daily interactions. Linnea hardware has a variety of superior lifetime PVD finishes that deliver an exceptionally clean, modern, and contemporary look for a wide selection of exterior and interior designs.

Works really well on the pocket doors. Drt. SC. Mon Mar 09 2026

Deltana has a proven record for exceptional service and quality and is the architectural hardware manufacturer with the largest inventory selection of architectural and door hardware in America. With an array of fine finishes, finding hinges, bolts, bumpers and stops, ball catch, roller latch, door accessories, and home accessories that compliment your home's decor.

It’s good.. Mo. IN. Fri Feb 27 2026

This patio sliding Door mortise lock by Prime-Line Products is constructed with a corrosion-resistant, stainless steel housing and stainless steel faceplate. It features a square-end face plate that serves as an adjustment feature for the hook's distance of projection. The keyway rests at a vertical position when the hook is fully extended in the locked position. The mounting holes are spaced apart at 3-11/16 in. on center. For best results, follow the installation instructions included with each package.

Linnea elevates architectural hardware by crafting high-quality stainless steel products in contemporary designs, whose features are fine-tuned to reflect our daily interactions. Linnea hardware has a variety of superior lifetime PVD finishes that deliver an exceptionally clean, modern, and contemporary look for a wide selection of exterior and interior designs.

Just received! The packaging was great and the mechanics look like good quality.. Laura. Oshawa, ON. Tue Nov 01 2022