Lucky Dog Dog Kennel Modular Box Kennel - This Welded Animal Enclosure is Perfect for Medium to Large Dog Breeds and Pets and is Designed with Their Safety and Comfort in Mind PET SAFE DESIGN - This modular dog kennel is designed with your dog's safety and comfort in mind. The panel's have seamless welding and have no sharp edges or fixtures, making for strong and durable kennel that is simple to assemble PERFECT FOR INDOOR OR OUTDOOR USE - A black powder coat over the entire structure ensures durability and rust resistance GREAT FOR MEDIUM AND LARGE DOGS - The panels are not ideal for small breeds or puppies with vertical upright spacing of 2 1/2 inches. Heavy duty steel bars are welded top and bottom, horizontal stabilizer bar welded at center for added strength ENDLESS CUSTOMIZATION - Modular Design allows you to configure multiple kennels in whatever orientation you choose, allowing you to utlilize all available space. With seamlessly welded panels, assembly is simple EASY ASSEMBLY - This heavy duty kennel cage has pre-assembled welded panels that simply clamp togther - No Tools Required