Handlers choice portable aluminum dog pens are lightweight, durable, and extremely versatile. Ideal for use indoors or outdoors, these pet play pens can be configured in multiple ways. Additionally, the panels open out allowing you to create a room divider on the fly. Simple pin connectors allow you to quickly connect multiple play pens together. These Pet play pens are made from quality construction rust-resistant aluminum. Each panel is 25" High by 30" wide.