Steel Rolling Scaffold - 6' H-3797 Portable platforms set up quickly for painting, maintenance and electrical work. Easy one-person assembly. No tools required. Adjustable end frames help create a level work surface, even on stairs. Platform height adjusts in 2" increments. Includes 5" locking swivel casters and plywood deck. Stack up to two units for 12' reach. OSHA regulations require Guard Rail and Outrigger when stacking.