Left Hand. This double sided surface mounted digital lock from Gatemaster is designed for wooden gates. It has a 14 button marine grade keypad on both sides and benefits from auto latching. The unit is handed and has a black powder coated stainless steel case.. Corrosion resistant – marine grade keypads and powder coated stainless steel casing. No power needed. Length adjustable latchbolt. Auto-latching – close the gate and the latchbolt latches into the gate frame