Attributes . Enclosure is formed and spot welded from 12 or 14 gauge steel. Removable 12 gauge inner panel is mounted to the rear of the enclosure on collar studs. Removable door is attached with slip hinges. To remove door, a tool is required to remove the #8 screw which captivates hinge. Door is fastened with a slotted 1/4 turn latch; doors 30" and higher are provided with two latches. A bonding stud is provided on the door and a grounding stud is provided in the box. Piano hinge on 12 gauge units. . Names