Iris 24'' Exercise 4-Panel Pet Playpens with Door is perfect for puppies, extra small to medium sized dogs and other family pets. Use it as an indoor dog fence, play gate, dog play yards, or dog exercise pens. The portable playpen for dog provides 8 square feet of play space for pets. Each panel of the Iris Playpen measures 36""L x 36""W x 24""H, doors are 14.5''W x 16.5''H and the distance between bars is 1.5''. The heavy-duty molded indoor pet pen will last for years. Pet pens can be positioned in different shapes to best suit your space capacity and pet's needs. The plastic panel on the dog playpen with door securely interlocks with full-length connecting rods. The panels for dog exercise pen with door also feature a non-skid rubber foot to protect flooring.