Fast Action Doors Safe and reliable with modular counterweights and INVERTED (Optional) Sturdy, reliable and safe, it is the ideal automatic door for fast access, goods and people transit areas, or for internal and external areas of the buildings. Sector is the most rationally designed and reliable interchangeable-section rapid roll-up door in the range. Compact and technologically advanced, it features a modular counter weighted balancing system with strong driving belts, ensuring a high Level of operation and safety, as well as an INVERTER (optional) system to adjust speeds, accelerations and braking thus ensuring very high performance. The motor, by operating at the lowest possible power, prolongs the operating Life of the automation. Fast, sturdy and reliable, it is suitable for any industrial or commercial premise.