The ECO Roller Garage Door uses a 77mm Insulated Aluminium curtain, which provides Heat and Sound insulation. The ECO77 curtain is commonly used on Roller Garage Doors. It comes in White, anthracite or Black as standard. Huge range of additional colours also available at an additional cost. The ECO Insulated Aluminium Roller Shutter is available electrically operated with Holt to Run operation, with a remote control operation.