2-3/4" Center 14/16" Setback The Simonton Prism Window Sash Lock, also known as a Cam Lock, is a durable and lockable hardware suitable for a variety of window types including double hung, single-hung, vinyl, and wood frames. Made of metal with a driftwood color finish, this sash cam lock comes with screws for easy installation. Designed by the trusted brand Prism (Simonton), this lock provides security and functionality for your home improvement project.