Heavy gauge mobile steel storage cabinet. Patented heavy duty 12 guage caster base. Four 5" casters (2 locking). Extra deep adjustable shelves that adjust on 2" centers provide 40% more3 storage space then standard size cabinets.METTA4R46247209. TA4R46247209. Sandusky Sandusky Mobile Transport Storage Cabinet Black TA4R46247209.