Load Center Number of Spaces 20 Amps 100 A Voltage 120/240V AC Circuit Breaker Type QO Included Enclosure Cover Combination Flush/Surface Cover Main Circuit Breaker or Main Lug Main Circuit Breaker Max No of Tandem Breakers 4 Phase 1 Height 17.94 in Width 14.25 in Depth 3 3/4 in For Use With Square D QO Circuit Breakers Short Circuit Current Rating 22 kA Enclosure NEMA Rating 1 Recommended Flush Cover Included Recommended Surface Cover Included Color Gray