Bestmassage Dog Playpen 24 Inch 6 Panel Heavy Duty Playpen Pen Dog FRISCO 4 8 Panel Plastic Dog Exercise Playpen with Door, 24 in H, Black Bestmassage Dog Playpen 24 Inch 8 Panel Heavy Duty Playpen Pen Dog 24" Tall Heavy Duty Metal Dog Exercise Playpen with 16 Panels Pet. The IRIS 24'' 4 panel dog exercise playpen with door can be used in dog play yards and as a play gate, small dog fence, and more. The IRIS playpen is portable and provides 8 square feet of play space for dogs, cats, and other pets. Pet playpen with door is made of durable molded plastic. Purchase IRIS add on panels to create an even larger pet playpen. The IRIS dog exercise pen with the door is made in the USA. Playpen with door is perfect for puppies, extra small to medium sized dogs and other family pets.