• Steel enclosure • Single phase, 3 wire, insulated/bondable movable neutral, 2 (1) spaces, 4 poles, 120/240 volt • No.GBK5 or GBK520 ground bars and doors sold separately • Tin-plated aluminum bus bar • In accordance with NEC, suitable for use as service equipment when not more than 2 service disconnecting mains are provided or when not used as lighting and appliance panelboard • When bonded, unused neutral connections may be used for equipment ground protectors in service entrance application • #8 - #2 wire range • Electrostatic powder coat, baked urethane painted • Rotate 180 degrees for bottom feed • Style 5 box 4-1/2 x 9-7/16 x 3 • UL Listed file E8741.