8 inch✕ 25 ft HVAC Insulated Flexible Duct R4.2
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Get smarter ducting today! Our 4-inch R4.2 insulated flexible duct is fire-safe, energy-efficient, and performs flawlessly. Plus, it comes with free equipment to make installation easy!
WHY THIS IS THE BEST OPTION FOR YOU:
Military-Grade Fire Protection: Two layers of metal and Owens Corning® fiberglass (UL approved)
R4.2 Superior Insulation: Compared to ordinary ducts, this insulation cuts energy loss by 30%.
No condensation: The moisture-proof design stops mildew and harm to the ceiling.
Continuous Length—Fewer seams mean faster installation.
YOUR FULL PACKAGE:
• 10" R4.2 Insulated Duct (25 ft)
• Kit for professional installation
• HD Video Tutorial (lifetime access)
GREAT FOR:
Homeowners who do it themselves
Installers, for the first time
Professionals that take care of HVAC
Ventilation in the grow room
ACT NOW FOR: high-quality fireproof duct, free installation tools, and expert video help.
ADD TO CART—Free shipping!
Insulated Duct R-6.0
| Format | Parameter |
| Out jacket | Silver Aluminum |
| Insulation | Yellow Fiberglass |
| Inner Duct | Aluminum Foil Duct |
| Fire Resistance | A2 |
| Temperature Range | 30℃/+150℃ |
| Operating Pressure | 2000-3000Pa |
| Maximum Air Velocity | 30m/s |
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