Aluminum rolling shutter with tilt-turn window , Automatic/manual open and close, Quiet operating, Shading, sound insulation 1. Use double layer aluminum alloy blades with foam , heat prevent. 2. The blade has different size for choice: width 45mm, 55mm, 77mm 3. Use smart tubular motor system with CE and RoHS certificatioin 4. With smart tilt-turn glass window. 5.Anti-sunlight, anti-rust, anti- ...