Duct diameter should be selected according to the airflow required by that portion of the system rather than simply matching what was previously installed.
R8 Flex Duct
Ductwork. Built for Better Airflow.
Reliable HVAC performance depends on more than the equipment. Proper air distribution starts with ductwork sized and installed for the application.
Browse BulletProof AC insulated R8 flex duct in the sizes currently available for ordering.
4" · 6" · 8" · 10" · 12"
Air Distribution
R8 Flex Duct
Shop insulated flex duct for residential and light commercial HVAC air-distribution applications. Current visible sizes include 4, 6, 8, 10 and 12 inches.
R8 Ductwork
R8 FLEX-DUCT
Insulated flexible ductwork for dependable HVAC air distribution and installation.
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R8 Ductwork
R8 FLEX-DUCT 4"x 25'
Insulated flexible ductwork for dependable HVAC air distribution and installation.
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R8 Ductwork
R8 FLEX-DUCT 6" x 25'
Insulated flexible ductwork for dependable HVAC air distribution and installation.
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R8 Ductwork
R8 FLEX-DUCT 8" x 25'
Insulated flexible ductwork for dependable HVAC air distribution and installation.
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R8 Ductwork
R8 FLEX-DUCT 10" x 25'
Insulated flexible ductwork for dependable HVAC air distribution and installation.
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R8 Ductwork
R8 FLEX-DUCT 12" x 25'
Insulated flexible ductwork for dependable HVAC air distribution and installation.
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Air Distribution Matters
The Equipment Can Only Move the Air the Duct System Allows.
Ductwork carries conditioned air between the HVAC equipment and the occupied space. Diameter, routing, insulation and installation quality all affect the amount of air that can move through the system.
Selecting the correct duct size is part of building an air-distribution system that supports the equipment rather than restricting it.
R8 insulation helps reduce unwanted heat transfer through duct runs while the flexible construction supports practical routing through attics and other installation spaces.
R8 Insulation
Insulated ductwork helps limit thermal gain and loss as conditioned air moves through the duct system.
Flexible Routing
Flex duct supports practical routing through attics, framing cavities and other installation areas.
Multiple Diameters
Available sizes allow installers to build branches and runs appropriate for the required airflow.
System Airflow
Proper duct sizing helps HVAC equipment deliver the airflow required for the application.
Current Sizes
R8 Flex Duct Sizes
4"
R8 insulated flex duct
6"
R8 insulated flex duct
8"
R8 insulated flex duct
10"
R8 insulated flex duct
12"
R8 insulated flex duct
Installation Considerations
Build the Duct System Around the Airflow Requirement.
Excessive length, sharp bends and compressed flex duct can add resistance and reduce delivered airflow.
Properly selected and installed ductwork helps the HVAC equipment operate with the airflow the system was designed to deliver.
BulletProof AC
R8 Ductwork. Built for Reliable Air Distribution.
Browse the available ductwork above or contact our team for product questions, contractor pricing and equipment support.