6 inch✕ 25 ft HVAC Insulated Flexible Duct R4.2 12 inch✕ 25 feet

6 inch✕ 25 ft HVAC Insulated Flexible Duct R4.2 12 inch✕ 25 feetGet 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

This product offers the best resilience to heat and fire

just put it in both ducting

The dryer duct connector is seamlessly connected to achieve a good leakproof effect

avoiding the degradation commonly seen in glass wool alternatives

and long-term jobsite use without collapsing

A steel helix that is stronger keeps it from falling apart even after 50 feet or more (lasts longer than weak competitors)

1) R4 Insulated Flex Duct (6 Inch x 25 Feet) Designed for HVAC and ventilation runs where insulation is needed

ACT NOW FOR: high-quality fireproof duct

Outer Diameter-5

On the other side there is a 150mm Male Spigot - Will fit into 6 inch duct

Two layers of aluminum and a strengthened PET scrim make up the jacket

a crucial feature for hospitals and food processing