... a few fabrics Principle Introduction SHIDAI electric roller shutter system use 220V tubular motor (A built- ... , it’s a upgrade product from manual roller shutter. Reelpipe is high quality aluminum alloy material, high ... , corrosion preventive. According to the height of roller shutter, reelpipe diameter can be choosed 50mm, 70mm, 80mm ... a motor drives two fabrics diagram roll up blind with remote control