Hubbell Electrical Products Explosionproof Junction Box GREB

6 5/8 INCH L X 5 1/2 INCH W X 5 1/4 INCH D OVERALL SIZE 5 3/4 INCH L X 4 5/8 INCH W X 3 9/32 INCH D INNER SIZE 2 INCH HUB SIZE UL 886, UL 1203, CSA C22.2, FM APPROVAL LUG MOUNTING CLASS I DIV 1 AND 2 GROUP C D, CLASS I ZONE 1 AND 2, GROUP IIIA, IIIB+H2, CLASS II DIV 1 AND 2 GROUP E F G, CLASS III DIV 1 AND 2, NEMA 3/4/4X/7B/7C/7D/9E/9 F/9G, IP66 ENCLOSURE THREADED COVER TYPE COPPER FREE ALUMINUM BODY MATERIAL GRAY EPOXY POLYESTER POWDER COATED BODY FINISH 4 11/32 INCH COVER OPENING DIAMETER GRAY EPOXY POLYESTER POWDER COATED COVER FINISH KILLARK[R] BRAND GR MODEL