Frame Kit suspends the hutch over the dropping pan so the pan can slide out for easier cleaning. The Frame Kit also conserves space by allowing hutches to be stacked up to four high by bolting frame kits together. Each kit contains four legs, two pan rails and four sets of bolts, washers and nuts. Legs are 23-1/2 in long by 2-3/16 in wide, made of rust-resistant, heavy-gauge galvanized steel. Straight-blade screwdriver and two 7/16 in wrenches (not included) required for assembly. Designed to fit the Pet Lodge 24 in by 24 in rabbit hutch.