Restore security, improve window performance, and refresh the look of your home with Prime-Line's F 2588 Vinyl Window Sash Locks. Designed for vertical sliding windows - including both single- and double-hung styles - these sash locks are ideal for replacing worn, loose, or missing hardware.Each lock features a reliable cam-action mechanism that pulls the keeper and meeting rails together for a snug, secure fit, resulting in tighter seals for better insulation and enhanced weather resistance while maintaining indoor comfort. The durable diecast zinc construction and white-painted finish offer long-lasting strength, corrosion resistance, and dependable operation while blending seamlessly with most existing window hardware.The locks fit systems with 2-1/16 inch mounting hole centers on both the lock and keeper are designed for windows with flush-mounted meeting rails. Installation is quick and simple using a standard Phillips head screwdriver, making this an easy DIY project.Each set includes one lock, one keeper, and mounting fasteners for convenience. Whether used individually or paired for larger sashes, Prime-Line's F 2588 Vinyl Window Sash Lock ensures your windows close tightly, reducing drafts and restoring window function and security. Always compare dimensions with your existing hardware to ensure proper fit.