Stiff metal is the correct product for the construction of a dryer vent because it has a smooth interior finish that permits lint to easily travel through decreasing the accumulation of lint. Stiff metal ducts likewise have an optimum flame-spread index of zero which suggests the stiff metal is less likely to burn rapidly and spread flames.

Dryer Vent Cleaning Palm Beach Knows The Proper Materials to Use In Dryer Vent Lines