Mortise Lock, Zinc, 3-11/16 in

Don’t replace your entire sliding door when the mortise lock is broken or old, simply replace it with the Prime-Line E 2121 Mortise Lock! This mortise lock is designed for surface-mounted sliding patio doors made of wood, aluminum, and vinyl, with handle sets featuring 45-degree angled keyway positions when locked. It is also compatible with doors using W&F manufactured handles. The mounting hole centers measure 3-11/16 inches from center to center, and the rear housing corners are square.

To ensure you select the perfect match before purchasing, compare the following features (in addition to the width of the housing) after removing the lock: the distance between mounting holes, the shape of the faceplate ends (rounded or square), the position of the slotted keyway (at a 45-degree angle or vertical) when locked, and the shape of the rear housing corners (square or slanted). For installation guidance, watch the manufacturer’s How-To Video linked on the product page.

Constructed from steel, this patio door mortise lock features an adjustable hook projection and a round end face plate. The keyway is positioned at a 45-degree angle with the hook fully extended, ideal for use on Adams Rite doors. For a stainless steel option, refer to model number E 2187.

Replace your old or broken sliding door locks effortlessly with the Prime-Line E 2121 Mortise Lock! Suitable for various sliding patio doors, installation is straightforward with the 6-32 tapped thread mounting flanges. Ensure a perfect fit by considering the keyway angle, mounting hole centers, faceplate shape, and housing corner shape. This reliable mortise lock measures 1.125 inches in depth, 0.5 inches in width, and 3.688 inches in height.

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