O-Z/Gedney Explosionproof Junction Box NJBEW161606

21 INCH L X 21 INCH W X 9.81 INCH D OVERALL SIZE 16.5 INCH L X 16.5 INCH W X 5.75 INCH D INNER SIZE 3.5 INCH HUB SIZE UL 886, CSA C22.2 APPROVAL HORIZONTAL/VERTICAL WITH SLOTTED FEET 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 4/7B/7C/7D/9E/9F/9G ENCLOSURE BOLT COVER TYPE SAND CAST COPPER FREE ALUMINUM BODY MATERIAL SAND CAST COPPER FREE ALUMINUM COVER MATERIAL SHOT BLAST BODY FINISH SHOT BLAST COVER FINISH NJBEW MODEL