Lee Valley Drop-Flap Lock

Primarily used for drop flaps, but can also be used on single doors.

The right-angle strike screws onto the carcass, and the 3/4″ high cylinder fits through a 3/4″ hole in the flap and is held in place with a pair of screws through the cylinder backplate.

Recessing the 1 3/8″ diameter back allows the lock to be used with material up to 7/8″ thick. A nickel-plate collar hides any tear-out on the front face.

Comes with two keys. Requires #4 screws (not included).