| Color | : | Black |
| Core Material | : | Polyester |
| Flame / Smoke Rating | : | Class 1 (25/50) |
| Inside Diameter | : | 8 in |
| Insulated | : | Yes |
| Jacket Material | : | Black Polyethylene |
| Length | : | 25 ft |
| Maximum Air Velocity | : | 5,000 FPM |
| Maximum Working Pressure | : | 6 in w.c. |
| Operating Temperature Rating | : | -20-140 F |
| Package Quantity | : | 1 |
| Product Family | : | PR-25 Series |
| Product Type | : | Insulated Flexible Duct |
| R-Value | : | 8 |
| Shape | : | Round |
The JPL PR-25 Series is a UL-listed Class 1 flexible air duct, ideal for use in low to medium pressure supply and return air systems. Its robust construction ensures reliable performance and code compliance for residential and light commercial HVAC applications.This duct features a spring steel wire helix encapsulated within a 2-ply, air-tight inner core. The core is wrapped with R-8 fiberglass insulation and protected by a durable black polyethylene vapor barrier, ensuring thermal efficiency and preventing condensation.