Gardner Pet Group's Pet Kennel is perfect for crate training. The door has the option of opening left or right. The vented hood is removable for easy access and cleaning. This pet kennel features sturdy construction and a safety lock latching system to keep your pet secured. It meets international (IATA) and domestic (USDA) air travel requirements but remember to contact your airline for any specific requirements unique to their guidelines. Gardner Pet Group is a high quality manufacturer of plastic injection molded pet products. Wheels are included on 28" size and larger.