ROUND SPIRAL DUCT
MATERIAL AND CONSTRUCTION

BHV manufactures round spiral duct and fittings in diameters from 3" through 80" in standard construction materials of galvanized steel, stainless steel, aluminum and poly vinyl coated steel. Our standard duct length is 10 feet with optional lengths from 3' through 20'.

This duct is available in 16 gauge through 26 gauge wall thickness. By special order we can provide spiral duct in unusual materials such as prepainted steel, or perforated metals.

All of our spiral duct features 4-Ply Lockseam construction to maximize strength and eliminate air leakage.

BHV spiral duct & fittings are available in single and double wall construction. Double wall construction may have either a solid or perforated inner liner with fiberglass acoustical or thermal insulation.

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