Four (4) Canvas and mesh walls including door. Attach to the edge of the Main Awning using Velcro. Walls attach to each other using zips. Used to provide an enclosed area of 4m x 2.5m for weather and bug protection. Canvas window flaps can be poled out for increased shade area or rolled up to allow full ventilation of Sunroom. Set includes Under Bumper Vinyl Skirt and Bed Rear with Door. Storage Bag included.