The SC2000 Mastershade® is an exterior rolling screen with a small 4" x 4" cassette box. The system is ideal as for solar control for smaller windows and openings. It is available motorized or manual with standard tracks, flange tracks, or cables. The screen can be rolled up and down as needed. The fabric hembar runs on the cable or track by means of gravity. When the shade is retracted the fabric is stored in the built-in semi closed protective box. A weighted aluminum hem bar in the fabric fold / pocket keeps the fabric taut.