... or electric control 3. Slat : double layer or with PU FOAM slat Noiseless Aluminum Roller Shutter window/door with motor Insulated roller shutter ... installation way for the roller shutter : roller shutters Perfomance: 1)Slat option: 32, 37, 42, 55mm; Extrusion: 37, 42, 55mm with ... foam, hurricane slat 55, 56mm 2) Rail option: 54, 65mm, 68 mm hurricane ...