Impact Dog Crate (Stationary), 450 Model, X-Large, Customer Assembled, Grey in Color Crate Size - 450 (see reference chart in images) * 20% lighter than comparable crates When Assembled - ID:40Lx28.5Tx23W * OD: 41Lx28.5Tx25.5W (Including airline rails/corners) *Door: 19.8x14.8 Welded rivet construction * Increased airflow with larger vent holes and door openings Marine grade slam latch automatically locks into place for a no hassle IATA compliant * Made in the USA *Assembly Required