4" Insulated Air Conditioning Ducting
Thermo-efficient insulated Heating & A/C Duct.
Black CPE Core (bonded to coated wire helix) easily expands over fittings & supports thick blanket of fiberglass insulation.
#471 has fiberglass reinforced metalized cover.
Rated R-4.2.
Operating temperatures (-29° to +121°C).
Meets UL 181, NFPA 90A and 90B.
This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm.
www.P65Warnings.ca.gov