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7" KM R6 Flex-Vent Insulated Flex Duct

Item: FD-7X25-R6FB
MFR: 053807000002

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Product Info


Flexvent KM is a thermally insulated, fully lined, UL 181 Class 1flexible air duct designed for low to medium pressure cooling andheating HVAC systems. It can be used in either supply or returnsections and provides economical means for handling misalignmentbetween systems components and ducting around obstacles wherefabricated and fitted ducts are difficult and costly to use. It is equallysuitable for new jobs or retrofit work and is especially useful whenmaking system extensions or for changing conditioned zones, nowor in the future. Compliance to NFPA Standards allows you toinstall lengths longer than the 14' limitation applying to connectors.It is a highly efficient part of the total duct system because thesmooth liner, the ample insulation and tough outer vapor barrierprovide good airflow, thermal insulation and a double air seal


Weight13.5 Pound (lb.)
Width24.875 Inches (in)
Height14.125 Inches (in)
Country of OriginUSA
UPC or Barcode677431002035
Hazardous MaterialNo
EPA Cert RequiredNo
Length14.125 Inches (in)
ApplicationAir Distribution
CertificationsGreenGuard Indoor Air Quality Certified and GreenGuard Children and Schools Certified
ColorSilver, Pink
Comments/NotesUL Listed - USA & CAN
ComplianceNFPA 90 A and 90 B
Core MaterialLaminated Polyester Film
FeaturesComplies 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.
Fire RatingMeets UL 181 & NFPA 90A-90B Fire Codes
Inside Diameter7"
Jacket MaterialLaminated Polyester Film
Maximum Air Flow5000 FPM
Maximum PressurePositive = 10" (4-16" ID) 6" (18-20"ID) Negative= 1/2" (4-20" ID)
Maximum Temperature250°F (121.1°C)
Operating Temperature-20°F to 250°F (-28.8°C to 121.1°C)
Pressure RatingWG - Positive 10 inches (4"-16" ID), 6 inches (18"-20" ID) - Negative: 1/2 inch (4"-20" ID)
Size7" x 25'
TierKM Flexible Duct
UL ListedYes
UL RecognizedYes
Vapor Transmission0.1
Warranty Offered10 Year Parts


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