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| Color | : | Black |
| Duct Size | : | 8 in |
| Length | : | 25 ft |
| Pressure Rating | : | 10 in-WC |
| R-Value | : | 8 |
| Temperature Rating | : | -20 to 250 deg F |
| Vapor Transmission | : | 0.1 perm |
| Velocity Rating | : | 5500 fpm |
Gray Flex's models GF(R-4.2), GF-6(R-6.0), GF-8(R-8.0) are tested in accordance with U.L.181 and approved for use as a Class 1 air duct material. Jacketing is printed with certification label, foot markers, size and performance data every 24"- (Foot markers every 12"). It is jacketed with a black polyethylene vapor barrier. The airtight core is our exclusive patented, reinforced inner liner. Fiberglass insulation is a minimum of 1 1/4" thick for GF, min. of 2" for GF-6, and min. of 2 5/8" for GF-8.
Quality Flex Duct, 8 in Duct, 25 ft Length, 10 in-WC, Black, R-Value: 8, 5500 fpm Velocity Rating, -20 to 250 deg F, 0.1 perm Vapor Transmission
- Exclusive Patented inner core
- Energy Efficient
- Lightweight and flexible/Installs quickly
- Compression packaged to less than 10% of its extended length for less storage and handling
- Air tight inner core to insure no fiberglass contact with the air stream
- Low maintainence scuff resistent polyethylene jacket
- Thick fiberglass insulation helps prevent condensation
- Easier to cut than a standard scrim reinforced product
- Data printed on the jacket for ease of inspectors and installers