Has a 12 ft reach and is stackable up to three units high in order to reach a range of 24 ft. Suitable and safe for all types of interior work. Each end can adjust separately to be used on both level surfaces and stairways. At 29-3/4 in wide, it can roll through doorways. Assembled size 74-3/4 x 29-3/4 x 75 in. Weighs 127 lb. From 27 to 73 in working Heights. 2 in increment adjustable heights. Powder-coated. 1/2 in plywood thick with protective steel edge banding platform. 5 in double locking heavy-duty. Meets ANSI, OSHA and CSA standards.