Crafted with precision, the Legacy Handle Set boasts a sturdy diecast construction, ensuring durability and longevity. The diecast material not only adds strength to the handle but also exudes a touch of sophistication, making it a standout addition to your sliding glass door.

Great fit. Mark. Wed Jun 24 2026

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 stainless steel mortise lock designed for a 45 degree keyway. The hook is spring-loaded with an adjustable hook projection that extends to the locked position to automatically latch upon closing, and the adjustment screw is on the face of the lock for easy adjustment. Each lock has a round end faceplate that is designed to fit on most Adam Rite sliding doors.

House Guard 45° Key Way Mortise Lock - Spring-Loaded Hook Latch, Round Face Plate, for Patio Sliding Doors

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.

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 2187 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.