Appleton Electric Explosionproof Junction Box GUBB-22

10 INCH L X 8 INCH W X 6-9/16 INCH D OVERALL SIZE 9 INCH L X 7.13 INCH W X 3.5 INCH D INNER SIZE LUG MOUNTING CLASS I DIV 1 AND 2 GROUP B C D, CLASS II DIV 1 AND 2 GROUP E F G, CLASS III ENCLOSURE MALLEABLE IRON BODY MATERIAL ALUMINUM COVER MATERIAL 0.44 INCH (TOP/BOTTOM/SIDE), 0.63 INCH (BACK) WALL THICKNESS 7.19 INCH COVER OPENING DIAMETER APPLETON[R] BRAND APPLICABLE STANDARD NEC 501-4 (A) (B), NEC 502-4 (A) (B) GUBB MODEL