Gray Flex Systems R-8 6 inch x 25 feet Polyethylene Insulated Flex Duct Black

Gray Flex's models 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.

Gray Flex air ducts are used primarily for runouts to ceiling diffusers or mixing boxes or wherever the flexible feature will facilitate duct runs in difficult spaces or around obstacles. They are suitable for use in supply or return residential heating/cooling or commercial duct systems within the limits of their performance characteristics. This duct is designed for indoor use only.

• 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
Code Compliance:
• Meets requirements of U.L.181, SBCC, BOCA, NFPA 90A and 90B, HUD 515-2.1 (b)
Performance Data:
• R-Value 4.2(GF), 6.0(GF-6), and 8.0(GF-8) determined in accordance with ADC Flexible Duct Performance and Installation Standards as published (1991) per ASTMC-518 at installed wall thickness in flat configuration
• Rated Pressure: 10 inches positive, 3/4 inches W.G. negative per U.L.181
• Pressure rating above is based on U.L. test procedure run at 2-1/2 times rated pressure (25" Water Gauge) in straight lengths at room temperature independent of other conditions per U.L.181 procedure. To ensure a margin of safety, Gray Flex recommends pressure not greater than 3" Water Gauge positive when operating conditions of maximum velocity and temperature above 160 may exist simultaneously
• Maximum Velocity: 5500 FPM
• Maximum Operating Temperatures: -20 F to 250 F
• Moisture Vapor Transmission: (Jacket only) .1 (max. .3) perms per ASTME 96A
• Fire Safety Rating: U.L. 181 (Flame spread less than 25, smoke developed less than 50)
Specifications:
• R-Value: R-8
• Length: 25 ft
• Diameter: 6 inches
• Packaging: 1 Pieces per Carton or 1 Pieces per Bag