Espag Window Locks

Espag (short for espagnolette) window locks are a multi-point locking mechanism that is often found on uPVC double-glazed windows, and occasionally found on aluminium and timber windows. Espag locks feature a faceplate with locking points, and a gearbox that is operated by a handle mounted to the sash. A turn of the handle operates the gearbox and engage rods or cams that lock the window into the frame.