Self lock character and good for small to middle size roller system, and also can be backup driving device of motorized roller.

The special specification or DID roller shutter:
Slats: 37mm, 42mm, 45mm, 55mm, 65mm, 77mmwith punched lighting hole or not;
Material: Aluminium sheet with PUR foam insulated;
PUR Density: 72kg/m3
Color: White color for standard color and other colors can be availabe based on the quantity;
Operation: Manual operation
Installation: Middle installation, outside installation, inside installation and built in type;

The advantages of roller shutter:
Warm keeping
Cold proofing
Theft proofing
Fire proofing
Good vision
Noise reduction
Wet proofing
Rain proofing
Pear-against
Wind&sand proofing