Roof Hatch Grab BarRoof Hatch Grab Bar: Save A Life Ladder Extension Access in and out of roof hatches can be stressful and pose a real threat of injury. The Roof Hatch Ladder Extension mounts easily onto all metal roof hatches and can be placed on either the right or left side of the hatch opening. All units are constructed with 1 1 2" x 1 4" steel vertical rails and 1 2" round horizontal rungs. Ladder extensions have a bright yellow epoxy finish.