Flexvent KM is a thermally insulated, fully lined, UL 181 Class 1flexible air duct designed for low to medium pressure cooling and heating HVAC systems. It can be used in either supply or return sections and provides economical means for handling misalignment between systems components and ducting around obstacles where fabricated and fitted ducts are difficult and costly to use. It is equally suitable for new jobs or retrofit work and is especially useful when making system extensions or for changing conditioned zones, now or in the future. Compliance to NFPA Standards allows you to install lengths longer than the 14 limitation applying to connectors. It is a highly efficient part of the total duct system because the smooth liner, the ample insulation and tough outer vapor barrier provide good airflow, thermal insulation and a double air seal.
FEATURES AND BENEFITS
Underwriters Laboratories listed for the US and Canada.
Complies with NFPA Standards 90A and 90B.
Corrosion resistant steel wire helix.
Fully lined for efficient air delivery.
The outer vapor barrier is a jacket of fiberglass scrim reinforced metallized film laminate.
Quality KM installations produce referrals that increase volume and profits.
Available in both box and bag packaging.
10.94 Pounds (lbs)
5 Inches (In)
11.375 Inches (In)
Country of Origin
UPC or Barcode
EPA Cert Required
14.125 Inches (In)
Yes NFPA 90 A and 90 B
NFPA 90 A and 90 B
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 over a fiberglass scrim. The outer vapor barrier is a bidirectional reinforced metal