Hubbell Electrical Products Explosionproof Junction Box GRMP

6 7/8 INCH L X 6 7/8 INCH W X 5 15/16 INCH D OVERALL SIZE 2 INCH HUB SIZE UL, CSA, FM APPROVAL LUG MOUNTING CLASS I DIV 1 AND 2 GROUP B C D, CLASS I ZONE 1 AND 2 GROUP IIB+H2 IIA, 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 EXTERNALLY THREADED COVER TYPE COPPER FREE ALUMINUM BODY MATERIAL COPPER FREE ALUMINUM COVER MATERIAL ELECTROSTATICALLY APPLIED GRAY EPOXY POLYESTER POWDER COATED BODY FINISH 5 9/32 INCH COVER OPENING DIAMETER ELECTROSTATICALLY APPLIED GRAY EPOXY POLYESTER POWDER COATED COVER FINISH KILLARK[R] BRAND FLAT BACK PAN GR MODEL