Hubbell Electrical Products Explosionproof Junction Box GRM-375L

6-7/8 INCH L X 6-7/8 INCH W X 5-15/16 INCH D OVERALL SIZE 6 INCH L X 6 INCH W X 4-3/16 INCH D INNER SIZE 2 INCH HUB SIZE UL 886/1203, CSA C22.2, 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 THREADED COVER TYPE COPPER FREE ALUMINUM BODY 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 APPLICATION HAZARDOUS LOCATION INCLUDES LENS COVER GR MODEL