42 inch Tall Black E-Coat Exercise Pen With Door by Midwest Includes Double Latch Door A Midwest Exercise pen is great if you want to keep your pet safe and contained, but with room to move. It is also great for puppies to run around and play. Each exercise pen is comprised of eight hinged panels, each 24'' wide, making the panel 16 linear feet. If you wanted to make it bigger you can hook two together with the hardware provided and it will be 32 linear feet. Can be deployed in any shape, such as 4ft x 4ft square, or 4ft 5in x 4ft 5in octagon. It has a Durable Black E-Coat Finish that provides long lasting protection, it has a secure double latch door, includes ground anchors, and folds flat for convenient storage. It is very easy to set up No tools needed!