This Vertical Sliding Window Sash Lock by Prime-Line Products is constructed of diecast and comes in a black painted finish. It features a 9/32 inch reach that engages into the fixed rail of the top sash, and it mounts at 2-1/4 in. mounting hole center spacings. This sash lock is used on single hung aluminum windows manufactured by Acorn and others. This sash lock includes one cam-action deep offset latch with.. See full description for further details