Allows airflow while diverting wind, rain and dust from enteRING cockpit. Helps keep cockpit warm in cold weather. Convenient roll up -doggie door- allows access to items in REAR of vehicle. Easily attaches with STRAPS, buckles and patented Belt-Rail? system. (Must be used with Duster Deck Cover #90031 or with Duster Extension #90034) -br>>Explore our site! We have over 20,000 Quality Jeep parts and accessories for sale!