JPL® MHP25R6B-04 Insulated Flexible Air Duct, 4 in ID x 25 ft L, 5000 fpm Flow Rate, R6 Insulation, Fiberglass/Metalized Reinforced Polyester/Pigmented Polyester, Domestic

JPL® Flexible Air Duct, Insulated, Series: MHP-25, 4 in ID, 25 ft Length, 5000 fpm Flow Rate, R6 Insulation Value, 0.01 perm Vapor Transmission, -1 to 6 in-WG Pressure, -20 to 140 deg F, Fiberglass/Metalized Reinforced Polyester/Pigmented Polyester, Silver, Domestic