DESC: PetBlvd.com offers: Top-of-the-Line Exercise Pen. Available in long-lasting Black Zinc coating, the toughest on the market and a wise investment for serious professionals and pet enthusiasts Folds directly into itself, taking up minimal space, consuming less time in the set-up and take-down processes Has a removable drop pin which allows pen to be easily joined with other pens or to your crate for extra play space Offers standard locking door on all sizes Has an easy carry handle for transporting Durable construction. Includes eight 2'-wide panels totaling 16 feet in length. All pens have a zinc electroplate finish, added after welding, to reinforce protection and increase the pen's value.