Adams Right, Stainless Steel, Round Faceplate, Patio Door, Mortise LockThis is a stainless steel mortise lock for a 45 keyway. The hook is spring loaded with an adjustable hook projection that extends to the locked position to automatically latch upon closing. Has a round end faceplate that is designed to fit on Adam Rite doors. Designed to fit Adams Rite doors 45 degree keyway The mounting holes are 3 11 16 in. on center Dimensions are: 1 1 8 in. deep and 1 2 in. wide Features a durable stainless steel housing Has an