... . good quality & competitive price. 3. different styles. TOMA transparent rolling shutter Description: Slat option:55mm, 60mm, 77mm, 100mm, transparent, roller grillRail ... down the door by hand or using manual crank system).Spring loaded for easy for lifting.A security center lock is ... with polyurethane inside,extruded aluminium slat,polycarbonate slat.Picture: transparent rolling shutter