Spiral ducts

A spiral duct is also known as a spiral pipe or circular tube. Spiral ducts are used to supply and extract air. Spiral ducts are made of galvanised steel and can be mounted either on the ceiling or on the wall. The low cost and long life of the spiral duct makes it one of the most popular ventilation ducts. Several spiral ducts can be combined to form a ventilation system by using different fittings.

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