THE BAR SIZE MUST MATCH THE WIDTH OF THE SHELF.
Nexel CA5RSB (2) Swivel Brake (2) Rigid Stem Casters, 5" Polyurethane, Set of (4), 1200 lb Cap NEXEL® CA5RSB (2) SWIVEL BRAKE (2) RIGID STEM CASTERS, 5" POLYURETHANE, SET OF (4), 1200 LB CAPACITY INCLUDES 4 DONUT BUMPERS TO HELP PROTECT DOORWAYS AND WALLS. TEMPERATURE RESISTANCE: SHORT TERM = -40°F TO +248°F (-40°C TO +120° C) CONTINUOUS = -4°F TO +176°F (-20°C TO +80°C) ATTACHES TO BOTTOM OF POST. EVERY TWO RIGID CASTERS REQUIRE ONE TIE BAR.