Hubbell Electrical Products Explosionproof Junction Box B7EH

34 1/4 INCH L X 21 1/2 INCH W X 11 7/8 INCH D OVERALL SIZE 29 3/4 INCH W X 17 INCH W X 8 11/16 INCH D INNER SIZE 4 INCH, 5 INCH HUB SIZE UL 1203, CSA C22.2 APPROVAL LUG MOUNTING CLASS I DIV 1 AND 2 GROUP B C D, CLASS I ZONE 1 AND 2 GROUP IIA IIB+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 HINGED COVER TYPE COPPER FREE CAST ALUMINUM BODY MATERIAL TOP, BOTTOM, SIDE HUB LOCATION ALUMINUM LACQUER PAINTED BODY FINISH PRISM[R] BRAND B7E MODEL