Double Walled Spiral Duct ensures lower friction loss and no sheet metal screws in the air stream. The Spiral Duct possesses various features like sturdy construction, ease of maintenance and ensures excellent resistance against corrosion. The Spiral Duct is made of quality grade raw material which ensures optimum durability along with long lasting trouble free service. Double Walled Spiral Duct is strong and rigid in construction and provides complete protection from external damages.
