Materials: Chassis with Cross Brace: Frame Members: 16 gauge, 1" dia. tubular stainless steel, type 304, bright buffed finish Basin Support: 11 gauge, stainless steel, type 304, #4 finish Cross Braces: .375" dia. rod stainless steel, type 304, bright buffed finish Connecting Rail: .375" dia. rod stainless steel, type 304, bright buffed finish Chassis with Shelf: Frame Members: 16 gauge, 1" dia. tubular stainless steel, type 304, bright buffed finish Basin Support: 11 gauge, stainless steel, type 304, #4 finish Shelf: 18 gauge, stainless steel, type 304, #4 finish Casters: 3" dia. non-marking, swivel ball bearing, zinc plated Construction: Chassis with Cross Brace or Shelf: Frame Members: one piece "U"-shaped; bends are mandrill-bent for wrinkle-free bends Basin Support: one piece formed ring; fully heli-arc welded to Frame Members; welds are buffed to a smooth, bright polished finish Cross Braces: formed; ends fully heli-arc circumference-welded to Frame Members; welds are buffed to a smooth, bright polished finish Connecting Rail: ends are fully heli-arc circumference welded to Cross Braces; welds are buffed to a smooth, bright polished finish Shelf: one piece with sides hemmed; hemmed edges are flanged down creating a unitized shelf and double-thick angle frame; corners are notched to fit the Frame Member contour; unitized shelf and double-thick angle frame's vertical flanges are fully heli-arc welded to Frame Members (welds are concealed) Casters: stem-mounted into caster socket with caster socket inserted into bottom ends of Frame Member