The Ice Locking Systems GMT 3Lever Sashlock is a security feature designed for doors, boasting a sturdy construction and accommodating a UK standard lock mechanism. It includes a sash lock with a keyhole, a latch, and a rectangular faceplate. The product is CE marked, which indicates conformity to European standards, and comes with a Certifire approval, suggesting a focus on fire safety measures. This lock is suitable for residential and commercial spaces where traditional locking mechanisms are desired. The 75mm indicates the backset size, which is the distance from the edge of the door to the center of the keyhole.