This 2.5 Inch 5 Lever Key Sashlock by Atlantic has been designed with a Polished Chrome finish. Atlantic's Sashlock comes predrilled, saving you time and ensuring a quick and easy installation process. What is a sash lock? One of the most common types of door lock fitted to internal and external wooden doors, a sash lock consists of a metal spring latch, which ensures the door remains completely closed even when unlocked, and a dead bolt which locks the door by turning a key. Features & Benefits BS EN 3621 Matching fixings included Complete with dust box Product Specification Material: Plated on Pressed Steel Lockcase Depth: 63mm / 2.5" Backset: 45mm Faceplate: 152mm x 25mm Finish: Polished Chrome Weight: 0.5kg