Add-a-room attachments are available to fit MOST Roll Up awnings. The Add-A-Room attaches to the extra channel in your awning's roller tube along the front. The sides are supported beneath the awning by telescoping tubes. The rear attaches with snaps to the side of your recreational vehicle. A skirt covers the gap between your RV and the ground. The screen panels are covered with integrated zip up windows for privacy and weather protection. Designed for a 104 inch awning rail to ground height, standard. Some OEM models are taller.