Product Description Do you have vertical sliding vinyl windows with loose-fitting, worn or missing locks? Besides adding a new look to your vinyl windows with a fresh set of locking hardware, these sash locks can help add peace of mind by restoring the security features on your vertical sliding vinyl windows. These locks can mount on most single-hung and double-hung vertical sliding windows constructed of vinyl. Each lock features a cam-type mechanism that is designed to draw the keeper in firmly towards the lock, providing your windows with tighter seals, better weatherizing, and increased security. They are constructed of durable diecast zinc, and come in a corrosion-resistant, industry standard white-painted finish to match other existing hardware that may already be in the home. Depending on the size of the sash, these locks can be used as singles or in pairs. Each set includes one lock and keeper, installation fasteners and simple instructions. Installation of these sash locks is easy and can be done with a simple handheld Phillips head screwdriver. Other design features include cam-action fastening and 2-1/16 inch mounting hole centers on both the lock and keeper. These sash locks mount on vertical sliding vinyl windows where the checkrails (also known as meeting rails) of both the inner and outer sash rest flush. Compare the style and dimensions of this lock to those required on your sliding windows and order yours today. From the Manufacturer This sash lock is constructed from die cast and comes finished in white. It features a cam action hook which draws the keeper tight when locked. The latch body has anti-jimmy studs which engage the keeper. For use on vertical sliding windows constructed of vinyl that both lock and keeper have 2-1/16 inch on center mounting holes These locks mount on the check (or meeting) rails of single and double hung vinyl sash where their checkrails rest flush when closed Features cam-type locking mechanism designed to grab and pull the keeper and vinyl meeting rails firmly together, providing tighter seals and increased security Overall width on both keeper and lock is 2-1/2 inch, the depth on the keeper is 5/16 inch and depth on the lock is 1 inch Note: Please refer to the line art for dimensions and compare with your needs before ordering (Not Universal)