Air duct consisting of a layer of aluminized polyester film and one layer of polyester film encapsulating a galvanized steel wire helix, à fiberglass insulation blanket rated R8 and an aluminized vapor barrier reinforced with tri-directional fiberglass scrim.

Diameter : 4 to 18 inches
R FACTOR : R8
Meets c-UL-us standard : Air duct
Complies with NFPA : 90A & 90B
GREENGUARD certification GREENGUARD GOLD GREENGUARD

FMD3 spec sheet 
GREENGUARD information https://spot.ulprospector.com/en/na/BuiltEnvironment
GREENGUARD CERTIFICAT 92470-410
GREENGUARD GOLD CERTIFICAT 92470-420

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