Crates cut housebreaking time in half by keeping ones puppy from eliminating in one end and sleeping in the other. Allows you to adjust the length of the living area as your puppy grows into its adult size home. Fold & carry design provides under thirty second assembly and disassembly when traveling. MidWest Life Stages 1648 Single Door Folding Dog Crate 48 x 30 x 33.