High strength sewn single-ply heavy duty silicone coated silver fiberglass fabric duct reinforced with a spring steel wire helix & black external wearstrip.


  • Sewn construction allows for better performance in lower & higher temperatures
  • Sewing process creates a more consistent construction allowing better air flow compared to other sewn hoses
  • Light weight duct designed for higher temperature portable/temporary heating & dehumidification applications
  • Great compressibilty
  • Flexible heater ducting able to withstand higher temperatures & maintain flexibility in cold weather conditions
  • Wearstrip offers additional external abrasion & drag resistance
  • Moisture resistant & UV stabilized to prevent mold & mildew
  • Great puncture resistance & high tear strength
  • Flame retardant to UL 94V-0
  • Ideal heater duct for cold weather construction and oil & gas sites
  • FX-Combo, combination ducting (FX-400 & FX-550) available as an economical way to manage high heat

Product Specs

Inside Diameter Min: 12" Max: 24"
Temperature Low: -50° High: 550°
Length 25'

California Residents
Cancer and Reproductive Harm.