12" x 25' MK-C R4.2 Insulated Silver Flexible Air Duct - Box

Product Highlights

Thermaflex® M-KC is designed for use in all pressure cooling and heating systems. It is used in either supply or return sections: for branch ducts and branch connections to or betw
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Item #: 21112A

Mfg #: 051712000003

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Description

Product Highlights

Thermaflex® M-KC is designed for use in all pressure cooling and heating systems. It is used in either supply or return sections: for branch ducts and branch connections to or between mixing units, induction units, control or terminal units and diffusion devices, including light troffers. It provides economical means for handling misalignment between systems components and ducting around obstacles where fabricated and fitted ducts are difficult and costly to install. It is equally suitable for new jobs or refit work and is especially useful when making systems extensions or for changing zones, now or in the future.
Compliance with NFPA Standards lets you install lengths longer than the limitation applying to connectors. It is a highly efficient duct in higher pressure systems because the liner, in combination with the reinforced, metallized vapor barrier, provides a double air seal.

California residents: see Proposition 65 Warning

Specifications
Weight23.10 Pounds
Length15.13 Inches
Width12.00 Inches
Height15.13 Inches
Country of OriginUSA
BrandThermaflex
TierM-KC
R-ValueR4.2
Jacket MaterialReinforced Metallized Jacket
Vapor Transmission0.05
ApplicationAir Distribution
CertificationsGreenGuard
ColorSilver, Pink
Comments/NotesUL Listed - USA & CAN
CompositionFiberglass
Core MaterialWoven Fiberglass
Fire RatingNFPA Standards 90A and 90B, Max Flame Spread 25. Max smoke developed 50
Inside Diameter12"
InsulatedYes
Maximum Air Flow6000 FPM
Maximum PressurePositive = 6" (4-10" ID) 10" (12"-16" ID) Negative = 2" (4-16" ID)
Maximum Temperature250°F (121.1°C)
Operating Temperature-20°F to 250°F (-28.8°C to 121.1°C)
Pressure RatingWG - Positive 16 inches (4"-10" ID), 10 inches (12"-16" ID) - Negative: 2 inch (4"-16" ID)
Size12" x 25'
Warranty OfferedYes
ComplianceNFPA 90 A and 90 B
UL ListedYes
UL RecognizedYes
Documentation

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