Explosion-Proof Junction Box, Hub Size 4 Inch, Overall Size 28.75 Inch L x 16.75 Inch W x 11.13 Inch D, Inner Size 24 Inch L x 12 Inch W x 7.75 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 4/9EFG, IP66, Body Material Sand Cast Copper-Free Aluminum, Body Finish Shot Blast, Cover Material Sand Cast Copper-Free Aluminum, Cover Finish Shot Blast, Mounting Horizontal/Vertical with Slotted Feet, Approval UL 886, CSA C22.2, Application Hazardous Location, Used On Terminal, Splicing wire, Pull box, Bus box, Includes Stainless Steel Cover Bolt, Neoprene O-Ring, Galvanized Steel Mounting Pan