The Dometic Sunchaser RV Patio Awning has all the qualities RVers have trusted for years in a full-featured, easy-to-operate manual awning at an affordable price. Automatic fabric tensioning and ergonomically designed lock knobs make it a breeze to operate. Partially or fully extend it up to 8' in either carport or patio position. Positive cam lock system prevents roll-back for easy one-person operation. Rugged rafters and support arms nest for increased strength and to help keep the vinyl canopy taut.