Product details:
Main breaker loadcenters breaker included 18-5/8 inches l x 14 3/8 inches w x 4 inches d amp rating=100 Single phase 3 wire; 120/240 volt; 24 circuits maximum. Twelve 1 inch spaces. Combination cover, 10,000 AIC. 100 amp main breaker included. 18- 5/8 inches x 13- 1/8 inches x 4 inches. UL listed.