DT Systems Master Retriever 1100 Box Mat The 4000 size crates are

The 4000 size crates are designed for medium sized dog breeds (Such as Labradors and smaller sized Retrievers) and stand at 24" W x 28" H x 36" L

the Professional series crates are constructed from aircraft grade aluminum

Exterior Dimensions: 36"x28"x65"

The casters are 3" polyurethane tires

Exterior Dimensions: 32"x21"x63"

DT Systems Master Retriever 1100 Box Mat The 4000 size crates areDT, Dependable and Tough, and the DT Master Retriever 1100 is no exception. Built with rugged durability in mind for those long days in the marsh, the DT Master Retriever 1100 is ready for the field. Features 100% WATERPROOF Collar & Transmitter, 1,100 yard range, 16 levels of e Stim, Vibration Assist mode, compact and lightweight design to handle anything you and your dog can dish out. DT, Features 1100 Yard Range with compact antenna technology MAXX