This Sash Lock by Prime-Line Products is constructed of diecast zinc and comes in a white painted finish. It features a 1/2 inch latch projection 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 can be used on vertical single and double hung aluminum sliding windows, as well as on horizontal aluminum sliding windows. This sash lock includes one cam-action latch with fasteners.