The Frigo 3 high speed door separates below-freezing cold storage areas from refrigerated above-freezing storage areas, allowing you to more precisely control expensive, conditioned facilities. With its average open/close speed of 48" per second, this high speed door helps to maintain separation and can reduce energy consumption. Unique 3 layer insulated vertical folding design, featuring heated side guides and full perimeter sealing, uses straps to pull the curtain from the floor up without rolling it around a drum. This leaves only soft, flexible curtain folds exposed to impacts rather than rigid bottom bars like other high speed doors -- meaning your door is much harder to damage by the daily wear & tear of warehouse life. The Frigo 3 high speed productivity door has a self supporting, corrosion resistant powder coated steel frame.