The gate includes a door panel to help you pass through the opening with ease without having to move the entire gate. Each panel locks in place at 90 and 180-degrees to provide extra stability with specially designed caps. For pen form, Wire Top and Floor Tray are sold separately. Specially designed cap locks panels in place at 90⁰ and 180⁰ angles for extra stability. Lockable gate door allows easy movement from room to room. Beautiful hardwood construction. Easy to assemble. If necessary, 2 sets of the gates can be combined for a larger space. General Product Information: DO NOT move panels while caps are on to avoid product damage. Recommended for small- medium dogs 8.8 to 44 lbs. (4-20kg).