Carefree Slide out Cover Roller. The Slide out Cover combines worry-free, dependable protection, easy installation, dependable performance and elegant styling all at an affordable price. Automatically extends with your slide room. Built-in automatic roller lock prevents billowing. Helps keep leaves, dirt and debris off your slide out. Keeps your slide room cooler and cleaner. The Slide out Cover is an economical slide out awning that automatically extends with the slide out room to provide shade and protection, without breaking the bank. There's no need for manual locks or wind deflectors: Carefree exclusive roller lock prevents billowing while in transit. The lock automatically engages when the room is closed and automatically unlocks when the room is deployed. The roller tube and mounting brackets are made of heavy-duty extruded aluminum for years of use and peace of mind while protecting your investment. The Slide out Cover is available in standard durable white vinyl and is finished with matching white mounting brackets and end caps. A beautiful slide out awning at an economical price. 42 inch extension. Roof size range: 66 inches to 73 inches; flange size range: 71 inches to 78 inches; fabric width 77 inches. Note: actual length of Slide out Cover (end cap to end cap) measures approximately 5 inches longer than the fabric width. Order roller and hardware kit separately.