8 in Insulated Flexible HVAC Duct 25 ft R-4.2 #R034

This 8 inch insulated flexible HVAC duct is designed for ventilation and ductwork applications where flexible routing and thermal insulation are needed. It has an R-4.2 insulation rating and is supplied as a 25 foot length.

- Made with thickened aluminum foil and a high-strength elastic spiral steel wire structure.
- The middle layer uses glass fiber insulation, providing a stated R-value of R-4.2.
- The insulation layer is described as having high temperature resistance, acid and alkali resistance, and flame retardancy.
- The stated temperature resistance range is -4°C to 454°C.
- Flexible construction allows the duct to be bent without using rigid elbows.
- The aluminum foil is self-supporting and is described as not retracting after installation.
- The duct can maintain flatness inside the tube, which the description states helps reduce wind resistance.
- The glass wool insulation structure is intended to absorb sound, with noise reduction stated as up to 85%.
- Suitable for high-, medium-, and low-pressure ventilation systems without corrosive gas, including central air conditioning HVAC systems, fresh air ventilation systems, mechanical equipment recovery systems, and other applicable ventilation systems.

This is an Open Box item. Please review all photos carefully for the exact item and its condition before purchasing.