Hubbell Electrical Products Explosionproof Junction Box GRH

12 INCH L X 11 INCH W X 7 5/8 INCH D OVERALL SIZE 4 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 9 5/8 INCH COVER OPENING DIAMETER ELECTROSTATICALLY APPLIED GRAY EPOXY POLYESTER POWDER COATED COVER FINISH KILLARK[R] BRAND GR MODEL