Aluminum keep for our Hybrid Mortise locks. This unique keep is left and right hand reversible and comes with an adjustable stop plate that fits 1-1/2" to 2-1/2" gate profiles. When used in combination with the Hybrid lock this keep ensures strong gate locking while preventing the gate from being pried open as the dead bolt's "hook" locks into the keep's anchoring plate. This model comes with wood screws for installation on wooden posts. Latch gap: 7/8"