Air duct consisting of a metalized polyester film and a polyester film encapsulating a galvanized steel wire helix, a fiberglass scrim reinforced black polyester vapor barrier.

Diameter : 4 to 8 inches
R FACTOR : R12
Meets c-UL-us standard : Air duct
Complies with NFPA : 90A & 90B
GREENGUARD certification GREENGUARD GOLD GREENGUARD

GR12 spec sheet
GREENGUARD information
https://spot.ulprospector.com/en/na/BuiltEnvironment

GREENGUARD CERTIFICAT 99635-410
GREENGUARD GOLD CERTIFICAT 99635-420