Suitable and safe for all types of interior work. Each end can adjust separately to be used on both level surfaces and stairways. At 31 in wide, it can roll through doorways. Assembled size 73-3/4 x 29-1/4 x 78-3/4 in. Weighs 147.4 lb. From 27 to 75-3/4 in working height. 2 in increment adjustable heights. 12 ft stackable up to 3 units high for 24 ft reach. Powder-coated. 5/8 in plywood thick with protective steel edge banding and anti-slip platform. 5 in double locking heavy-duty. Perry scaffold style compatible. Meets ANSI, OSHA and CSA standards.