8X25FT KM FLEX

ECCO Manufacturing™ Insulated Flex-Vent Air Duct, 25 ft Length, 8 in Diameter, 0.5 in-WC, 10 in-WC, Fiberglass/Polyester, R-Value: R4.2, R6, R8, 5000 fpm Velocity Rating, -20 to 200 deg F

Flexible air duct, extremely strong with heavy fiberglass cloth fabric permanently bonded to a corrosion-resistant spring steel wire helix. For low to high-pressure heating and cooling systems. A superior alternative in applications where insulated duct is not required or cannot be used, e.g., cleanroom applications. Unlike connector-rated Products, S-TL is not limited to length of run. Strong polyester film laminated and encapsulating a heavy, corrosion-resistant steel wire helix, forms the inner core and supports a thick blanket of fiberglass insulation. The outer vapor barrier is a new bi-directional reinforced metallized vapor barrier which will not unravel. The smooth airtight inner core of polyester is designed for low to medium pressure systems.