O-Z/Gedney Explosionproof Junction Box NGUB555A

5-3/8 INCH L X 5-3/8 INCH W X 5 INCH D INNER SIZE 3/4 INCH HUB SIZE UL, CSA 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, NEMA 4/4X/7B/7C/7D/9E/9F/ 9G ENCLOSURE COPPER FREE ALUMINUM BODY MATERIAL COPPER FREE ALUMINUM COVER MATERIAL GRAY EPOXY POWDER COATED BODY FINISH GRAY EPOXY POWDER COATED COVER FINISH INCLUDES NEOPRENE O-RING NGUB-A MODEL