Full height adjustment 18-36” & section mobility positioning w/max results & minimum effort.  34 oz. H.D. vinyl w/bacterial protection, & 1” firm density foam tops. Seamless corners on upholstered components, top sections, welded steel support frames. Pivoting joints house hardened steel shoulder bolts w/locking nuts & footswitch control. Power assisted caster system. 110 volts, 60Hz motor.  #AM-234-Ea   #AM-807-Siderail Pr   #AM-1028-Set of 4 Locking Castors. Latex Free UNSPSC#42192001