Ace Mill Silver Steel Mortise Latch

This steel mortise lock with rounded faceplate ends features an adjustable, spring-loaded hook latch projection. Suitable for wood, aluminum, and vinyl sliding patio doors. Compatible with 45-degree angled keyway positions on mortise style, surface-mounted patio door handle sets. Mounting hole centers measure 3-11/16 in. from center to center, with square rear housing corners.