We all know that housebreaking isn't the most enjoyable part of being a pet owner, but it must be done. The Richell Pet Training Kennel might be just the thing to help both of you through this awkward phase. It's loaded with safety features and is constructed of durable plastic. A locking system on the door, top and base ensure your pet will stay inside when he's supposed to. There's no breaking out of this kennel. Casters on the base make moving it easy, and the plastic base is removable for easy cleaning. Double tops open outward for easy pet access. This kennel even features slots in the base to accommodate the Paw Trax Training Pads.Medium Kennel:Recommended for dogs 18 to 44 lbs.1.25-inch space between slatsDoor is 13.25W x 15.125H inchesTop opens to 22.375W x 14.25H inchesSmall Kennel: