48" Heavy Duty Dog Crates for Large Dogs, Escape Proof, Upgraded 4 Lockable Wheels, Removable Door, Dog Kennel Indoor, Max Load 300Lbs, Easy to Clean, XL Dog Cage for High Anxiety Dogs[Indestructible & Safe] Our design is perfect for large and medium dogs with high anxiety. Made of sturdy 0. 03 inch thick, heavy duty steel. Protective green coating is included to improve durability and safety [Ultimate Stability & Easy to Move] Equipped with locks on ALL FOUR wheels for enhanced stability. Wheels can be raised by up to 0. 3 inches to maintain balance on uneven surfaces, making it easier to move around inside and outside and clean