4” Silver Flex R8
$65.00
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4” Silver Flex R8
$65.00
4” Silver Flex R8
- Diameter: 4 inches
- Length: 25 feet
- Insulation (R-Value): R-8 fiberglass insulation, which offers high thermal efficiency.
- Jacket Material: Heavy-duty, tear- and puncture-resistant metalized polyester vapor barrier with a "rip-stop" scrim reinforcement.
- Inner Core: Air-tight, two-ply black pigmented polyester core with a helically wound, galvanized high-carbon steel wire helix to prevent unraveling when cut.
- Airflow Static Pressure Rating: Rated for up to 10 W.C. (positive pressure).
- Temperature Range: -20°F to 180°F.
- Certifications: UL 181 Class 1 Air Duct, ASTM C518, GREENGUARD Gold Certified (formaldehyde-free insulation), HUD/FHA, NFPA 90A and 90B standards.
