Cast Junction Box, Hub Size 2 Inch, Overall Size 6-13/16 Inch L x 8-13/16 Inch W x 5-9/16 Inch D, Inner Size 6 Inch L x 4 Inch W x 4 Inch D, Wall Thickness 15/32 Inch (Side), 3/8 Inch (Cover), 5/16 Inch (Bottom), Cover Type Screw-On, Enclosure Class I Div 1 and 2 Group D, Class I Zone 1 and 2 Group IIA, Class II Div 1 and 2 Group E F G, Class III, NEMA 7D/9EFG, Body Material Cast Iron, Body Finish Hot Dip Galvanized, Cover Material Cast Iron, Cover Finish Hot Dip Galvanized, Mounting Lug, Approval UL 886, CSA C22.2, Lug and Cover Screw Material Stainless Steel, Weight 27 Lb