Sheet steel enclosure. Single phase, 3 wire, factory bonded split neutral, 42 (3/4 in ) spaces, 42 poles, 120/240 volt. Main breaker type CSR at 35,000 AIC when used with CH or CHP branch breakers. Solid copper bus bar. Twin neutral with cross bus. Unused neutral connections may be used for termination of equipment grounds. Listed for use as service equipment with twin neutral doubling as neutral/ground; remove bonding strap for separate neutral/ground bars for sub-feed applications. Includes combination surface/flush cover. #2 - 300 kcmil wire range. Electrostatic powder coat, baked urethane painted. Rotate enclosure and trim 180° for bottom feed. 14-5/16 in x 37 in x 3-7/8 in UL Listed file E8741.