Attributes . Enclosure is formed and spot welded from 12 or 14 gauge steel. Removable 12 or 14 gauge inner panel is mounted in the rear of the enclosure on collar studs. Removable door is mounted on slip hinges. Door is fastened with a slotted quarter 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. Mounting holes are provided in the rear of the enclosure. Piano hinge on 12 gauge units. . Names