【Spacious Design for Extra-Large Dogs】This 54-inch dog crate provides ample space for breeds over 90 pounds like Great Danes and Mastiffs. Dimensions: 54"L x 36"W x 46"H exterior, with a roomy interior of 53"L x 35"W x 37"H. It supports up to 400 lbs, ensuring comfort for your large pet. 【Superior Strength and Security】Constructed from heavy-duty 20-gauge steel with reinforced 0.6-inch diameter tubes, this crate is chew-proof and escape-proof. It withstands even the most powerful or anxious dogs, offering peace of mind for owners. 【Durable and Rust-Resistant】Made with corrosion-resistant materials and a multi-layer non-toxic coating, this kennel is built to last. It resists rust and wear, keeping your dog safe in various environments. 【Easy Mobility with Lockable Wheels】Equipped with four 360-degree rolling casters (two lockable), you can effortlessly move this heavy crate around your home. Lock the wheels for stable placement when needed. 【Simple Cleaning Features】Includes a slide-out tray under the floor grate for quick cleanup. The grate design allows waste to fall through while providing firm footing for your dog. Both components are removable for convenience. 【Quick Assembly Process】Partially pre-assembled, this crate sets up in under 10 minutes by simply screwing parts together—no tools required beyond what's included. 【Customer Assurance】We prioritize quality and satisfaction. If any issues arise within 30 days of purchase, contact us directly for support to ensure your pet's comfort.