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	THE SPIRAL DUCT MANUFACTURERS ASSOCIATION (SPIDA) is the professional organization of the manufacturers of Spiral Duct and related products. WHY SPIRAL DUCT? Lower Heating and Cooling Energy Use Lower Fan Energy Use Lower Air Leakage Lower Installation Cost Lower Material Usage Attractive appearance WHERE CAN SPIRAL DUCT BE USED? High Efficiency VAV Systems, the Most Efficient System Available HVAC Applications Can be Fabricated as Flat Oval Duct Dust Removal and Fume Exhaust Grain Handling and Material Conveyance Architectural Applications HOW DO I FIND OUT MORE? CLICK A BUTTON, USING THE MENU ABOVE!

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