Now, the revolutionary "KWIK-BUILD" option from Bass eliminates the hassle of cage assembly and turns every cage into a collapsible unit that can be disassembled for storage when not needed. Thanks to the invention of the "KWIK-KLIP" from Bass, this clip allows you to fully assemble a single cage in minutes with out any special tools! NOTE: First dimension listed will be the door side of the cage. (30x30x18 and larger cages will have an oversize surcharge added to shipping rate. Cages over 48" long must ship motor freight). Please note upgrades are per compartment per cage.