Thermaflex - 53718000002 - 18" x 25' KM R4.2 Flex-Vent Insulated Flexible Air Duct

Item Number: THFKMR4B18  MFR Part Number: 053718000002

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18" KM R4.2 Flex-Vent Insulated Flexible Air Duct
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Description

Details

Flex-Vent KM Has A Strong Polyester Film Laminated and Encapsulating A Heavy, Corrosion Resistant Steel Wire Helix, Forms the Innercore and Supports A Thick Blanket Of Fiberglass Insulation. The Outer Vapor Barrier Is A Bi-Directional, Reinforced Metallized Vapor Barrier Which Will Not Unravel. The Smooth Air Tight Inner Core Of Polyesteris Designed For Low To Medium Pressure Systems.

Flex-Vent Advantages:
  • Fast, Economical Installation.
  • Oversized Cores For Proper Fit.
  • Easily Shaped To Fit Oval Inlets.
  • Superior Insulation and Thermal Performance.
  • UL181 Listed and Complies with NFPA Standards 90A and 90B.
  • Complies with Most State and Federal Standards or Codes.
  • Ideal For Residential Air Distribution and Venting Applications.
  • Flex-Vent Is Competitively Priced and Backed By A 5 Year Warranty.
Specs:
  • Diameter: 4-20 Inches ID
  • Pressure Rating: (Wg)
  • Positive: 10" (4"-16" ID) 6" (18"-20" ID)
  • Negative: 1/2" (4"-20" ID)
  • Velocity: 5000 Fpm
  • Temperature Range: -20F To 250F
  • R Value: R-4.2, R-6.0, R-8.0

California residents: see Proposition 65 Warning

Specifications
Weight35.7 Pounds (Lb)
Width24.875 Inches (In)
Height20.625 Inches (In)
Country of OriginUSA
Length20.625 Inches (In)
BrandThermaflex
TierKM
R-ValueR4.2
ApplicationAir Distribution
CertificationsGreenGuard Indoor Air Quality Certified and GreenGuard Children and Schools Certified
ColorSilver, Pink
Comments/NotesUL Listed - USA & CAN
CompositionFiberglass
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 Diameter18"
InsulatedYes
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)
Size18" x 25'
Warranty OfferedYes
ComplianceNFPA 90 A and 90 B
UL ListedYes
UL RecognizedYes
Documentation

Documentation