A dog crate or kennel is an enclosed, den-like space — wire, metal-framed or wooden — used indoors for crate training and travel, or outdoors as a run, pen or kennel with a roof. The interior should clear your dog by 2–4 inches in height and length, so it can stand, sit without touching the roof, turn around and lie down flat. Picking between a crate and a kennel is mostly about where it lives. Indoors, a crate is a training tool and a den; outdoors, a kennel needs a roof, a raised floor and a frame a determined dog cannot bend. Heavy-duty models matter for chewers and escape artists: a thick wire gauge, reinforced door latches and a welded frame are what keep a strong dog contained. If your dog is outside, check the heavy duty dog kennel buying guide for the frame and latch details worth paying for, and the large dog kennel size chart before ordering a run. Every crate, kennel, run and pen we sell is listed below, from 48-inch heavy-duty kennels with a roof to furniture-style crates and fabric travel crates. Free shipping on every order, no minimum purchase. Outdoor kennels with a roof: the 48-inch heavy duty dog kennel with roof and the 52-inch model. Large outdoor runs: the large dog kennel outdoor and the 15×10 ft kennel with canopy. Crates for strong or large dogs: the 55-inch heavy duty dog crate and the 61-inch extra large metal dog crate. Travel and indoor training: the Oxford fabric dog crates. If the crate is for indoors and has to look like furniture, start with dog crate furniture instead.