Explosionproof Cast Junction Box, Hub Size 3 Inch, Overall Size 27.31 Inch L x 21.5 Inch W x 9.06 Inch D, Inner Size 22.5 Inch L x 16.44 Inch W x 5.75 Inch D, Cover Type Bolt-On, Hinged, Enclosure Class I Div 1 and 2 Group B C D, Class I Zone 1 and 2 Group IIA IIB, Class II Div 1 and 2 Group E F G, Class III, NEMA 4/7BCD/9EFG, Body Material Copper-Free Aluminum, Body Finish Shot Blast, Cover Material Copper-Free Aluminum, Cover Finish Shot Blast, Mounting Horizontal/Vertical with Slotted Feet, Approval UL 886, CSA C22.2, Application Hazardous Location, Material Stainless Steel (Hinge), Neoprene (O-Ring)