MHP series is a UL listed and labeled Class 1 flexible air duct, used in the HVAC industry as a supply and return air duct in low to medium pressure duct systems. The flexible duct is constructed with a spring steel wire helix, encapsulated in a 2-ply, air-tight inner core. Fiberglass insulation choices of R4.2, R6 & R8 encompass the core and a unique metalized, reinforced vapor barrier surrounds the entire duct.
JPL® 2-Ply Insulated Flexible Air Duct, MHP Series, Round Vent Duct, 25 ft Length, 18 in Diameter, 0.5 to 6 in-WG, Fiberglass/Polyester/Steel, Black/Sliver, R-Value: R6, 5000 fpm Velocity Rating, -20 to 200 deg F, 0.01 perm Vapor Transmission, Additional Information: Poly Bag Packaging
| Additional Information | : | Poly Bag Packaging |
| Color | : | Black/Sliver |
| Diameter | : | 18 in |
| Length | : | 25 ft |
| Material | : | Fiberglass/Polyester/Steel |
| Pressure Rating | : | 0.5 to 6 in-WG |
| R-Value | : | R6 |
| Series | : | MHP Series |
| Temperature Rating | : | -20 to 200 deg F |
| Vapor Transmission | : | 0.01 perm |
| Velocity Rating | : | 5000 fpm |
| Vent Duct Shape | : | Round |