THIS IS A COMPLETE PANELBOARD ENSEMBLE INCLUDING 20W X 50H BOX, 54 SPACE INTERIOR, COVER/TRIM, MAIN BREAKER KIT, 3P QDL (25KAIC) MAIN BREAKER, AND GROUND BAR. USE SQUARE D TYPES QO (10K), QO-VH (22K), QOB (10K) OR QOB-VH (22K) BOLT-IN BRANCH BREAKERS (SOLD SEPARATELY)