Precision Pet Ultimate Exercise Pen Safe drop-pin design eliminates exposed screws, wires, or pins that might otherwise harm pets and allows additional exercise pens or crates to be attached Included step-thru locking door provides easy access to pets Collapsible design and included carrying handle allow for easy storage and transportation Zinc electro-plate finish ensures durability against wear and tear of use Panel Dimensions: 24(width) x 42(height) x 6 panels = 16 ft. in total length.