Special feature: It uses bevel gear right-angle couplings. With one motor, it can control two windproof roller shutters at right angles or three in a U shape. There are no columns in the middle. When the roller shutters are opened, the corners are fully transparent. Applicable: Glass sunroom, right-angled shading solution, generally installed indoors Versatility: Compatible with fabrics of various opening rates Applicable specifications: Right-angle windproof roller blinds with a single side length generally not exceeding 3 meters and U-shaped windproof roller blinds with a total length not exceeding 6 meters, with a height less than 3 meters.