Roof Access Hatches Posted on January 13, 2001 JwvW1rZJr2Posted in Products Roof Hatches are available in 24″ round or square, 30″ round, and 24″ X 30″ rectangle. All units are hinged, have a 6″ frame raise, and have both lock and bolt tabs. These roof hatches meet current AWWA D100 standards.