The Mastershade® SC4500 zipper screen is the ideal rolling solar screen and bug screen system for verandas, garage doors and lanais. Roll down the fabric and specially engineered zipper system keeps the fabric within the track, keeping unwanted bugs from entering the space. The SC4500 can be customized to fit the opening or space. It is available in a variety of frame colors. Manual operation with a hand crank is standard, with an option of motorizing with a remote control. Mesh fabrics are available in a variety of colors and openings from 3 to 50% open.