One part number includes: 3 door desiccator cabinet. 1/4" clear acrylic w/rear plenum chamber for gas input. Factory applied clear permanent static dissipative coating and grounding option. Exterior dim. 24"W x 24"D x 36"H. Stand W/4 Conductive locking casters. Stainless steel bottom plate installed in chamber. Protects surface from abrasion and completes ground circuit. Stainless steel tray 1/2"D 19.75"W x 20.5"D usable space w/tray rack. Pressure relief valve installed per chamber. Flow meters.