One Sided Staircase 30 Table Paper Accesories Heavy duty vinyl with Permablok 3(R) 10883 Heavy duty vinyl with Permablok 3(R) bacterial protection * 1´ Firm density foam tops * Radiused seamless corners on upholstered components * Top sections have welded steel support frames * Pivoting joints house hardened steel shoulder bolts with locking nuts to ensure years of trouble free operation * Footswitch control * Power assisted caster system (unless noted otherwise) * 110 volts 60Hz motor (220 volts 50 Hz available on special order) * 400 lb USB data line One side staircase has platform with three enclosed sides * Platform: 24 Long x 30 Wide * Four steps: 30 Wide x 6 High *