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 23.5 inch long by 2.1875 inch wide, made of rust-resistant, heavy-gauge galvanized steel. Straight-blade screwdriver and two 7/16 inch wrenches (not included) required for assembly. Designed to fit the Pet Lodge 30 inch by 30 inch or the 30 inch by 36 inch Rabbit Hutch (Item Nos. AH3030 and AH3036, sold separately).