BUILT TO LAST – This Prime-Line sash lock is diecast constructed, creating a solid single unit built to withstand the test of time. VERSATILE ADAPTABILITY – The single element sash lock can be used on both single and double hung vertical sliding windows, adapting to both wood and vinyl constructed frames. CONTEMPORARY DESIGN – The Prime-Line sash lock is powder coated with a white enamel finish, accentuating any window unit with a clean and fresh appearance. PRIME-LINE GRADE – We specialize in repair and replacement hardware products for your home. Prime-Line's commitment to quality results in repairs which look as good as the initial install, making us the go-to solution for our loyal customers. SIZING - This sash lock has 2-1/4 inch mounting hole centers with a 3/8 inch latch projection that engages into the fixed rail of the top sash.