This Slim Line Window Sash Lock by Slide-Co is constructed of diecast metal and comes in a corrosion-resistant white painted finish. This sash lock is designed to fit vertical sliding single hung and double hung windows constructed of aluminum vinyl and wood. The cam-action lock helps hold the window securely closed and with its universal design it is compatible with windows built from a variety of manufacturers. The mounting holes are spaced apart at 2-1/4 in. on center and they are set back from the edge with a 3/8 in. hole offset.