Perfect for stop of stairs when you need to mount one side on the wall and one side on a banister, but it can also be mounted in a hallway when the walls don €™t line up. As a hardware mount gate, it provides maximum safety at the top of stairs and in high traffic doorways because there is no bottom threshold to potentially trip over as found on pressure mount gates. Hinge and Latch side hardware can be mounted on an angled surface. Easy one hand adult operation. Quick release hardware allows gate to be easily removed when not needed. Directional stop prevents gate from swinging out over stairs. nSize of Opening and Extensions Needed 28 42.5 included with gate. 42.5 52.5 1-G4200. 52.5 63 2-G4200. Features n Gate Width 28 € to 42.5 €n Height 31 €n Bar Spacing 2.125n Mounting options wall mountn Heavy duty steel constructionn Optional extensions are available for openings up to 63Item Details n Dimensions 28 42.5 x 31n Color Black