Double doors in front allow easy access to pass or entry your pet or feed the food. The removable plastic tray underneath bottom makes it easier to catch any mess Designed with two sturdy door latches system, prevent pet from escaping The dog cage is constructed of square metal iron tubes for durable use, which is highly sturdy and heavy duty, more resistant to bite than the round one. It s fully and firmly welded to ensure the strongest structure, not easy to bend or deform The dog cage is equipped with four rolling caster wheels for manipulating conveniently, two of them are lockable and two of them are none. Specifically designed for powerful doggies who have clawed or chewed their way out of other crates. or dogs who are escape artists, has separation anxiety. Hard and tough to hold large or two medium dogs within 100KG. Thicker slats on bottom. Space between bar is 2.2 inches prevent pets from stuck.