Many A/S over the years have been fitted with various Snap-On accessories. I have seen: canvas ultraviolet blocking wheel covers which snap over the wheel wells and protect the tires from UV light which damages tires, snaps on all the window frames which would allow canvas exterior covers to be snapped over the windows for shade, privacy, or protection of the interior from UV while A/S is in storage. i even saw one screen door that had snaps and covers made to fit inside the screen door (top and bottom) for occasional use when the primary door was open. I am sure there could be many other uses. I look forward to reading other comments. Sam