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Thermaflex 053812000001 - KM Silver Flex-Vent Insulated Flexible Air Duct, R6, 12" X 25' Box

Item: FD12R625BX
MFR: 053812000001
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Flex-Vent KM is a thermally insulated, fully lined, UL 181 Class 1 flexible 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.


NameThermaflex 053812000001 - KM Silver Flex-Vent Insulated Flexible Air Duct, R6, 12" X 25' Box
Gemaire Item NumberFD12R625BX
Manufacturer Product Number053812000001
SKU - PIM Number1371468918022
ERP Number348088
Unit of MeasureEACH
Weight19.0 Pound (lb.)
Length16.6 Inches (in)
Width12.0 Inches (in)
Height16.6 Inches (in)
Hazardous MaterialNo
EPA Cert RequiredNo
Country of OriginUSA
TierKM Flexible Duct
Jacket MaterialLaminated Polyester Film
Vapor Transmission0.1
ApplicationAir Distribution
CertificationsGreenguard, GreenGuard Children & Schools, Greener Product, CHPS Member
Comments/NotesUL Listed - USA & CAN
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 Diameter12"
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)
Size12" x 25'
Warranty Offered10 Year Parts
ComplianceNFPA 90 A and 90 B
UL ListedYes
UL RecognizedYes
GEM - Case Quantity