This is a spring loaded tilt latch for both single and double hung vinyl windows. This is an injected molded plastic in white; with fasteners. Used on sash panels designed to tilt-in and down from the top for cleaning, 3-3/8 in. in length, 1-1/4 in. width and 2-5/16 in. hole centers, 5/16 in. backset. Contains 1 left hand latch and 1 right hand latch.