Hart Cooley 11000804 Flex Duct Sleeve 4 in R-8.0 5 Ft

Product Description

The HART COOLEY 11000804 is an insulated flexible duct sleeve designed for use in residential and light commercial HVAC duct systems. It features a metalized polyester jacket rated at R-8.0, providing a high level of thermal insulation to reduce heat gain or loss in supply and return duct runs. At 5 feet in length and sized for 4-inch diameter duct, this sleeve slips over existing flex duct to upgrade or restore insulation performance. HVAC technicians and duct installers use this sleeve to bring duct assemblies up to code-required insulation values or to replace damaged jacket sections without replacing the entire duct run.

This sleeve is suited for 4-inch diameter flexible duct installations in attics, crawlspaces, and unconditioned spaces where higher insulation values are required. The R-8.0 rating meets energy code requirements common in many climate zones for supply ducts located outside conditioned space. The F208 designation corresponds to the R-8.0 insulation level in the Hart Cooley flex duct sleeve line. Note that the stated R-value is valid when the sleeve is used on relatively sized duct as intended.

Key Features

• R-8.0 insulation value meets energy code requirements for ducts in unconditioned spaces
• Metalized polyester jacket provides a durable, reflective outer layer
• 4-inch diameter fits standard 4-inch flexible duct
• 5-foot length suitable for short duct runs or spot repairs
• UL-classified construction for use in HVAC duct applications

Compatibility

Designed as an OEM-style insulation sleeve for use over 4-inch diameter flexible duct in residential and light commercial HVAC systems. R-value is valid when the sleeve is applied to relatively sized duct as specified.

Installation Notes

Installation is typically performed by licensed HVAC technicians or qualified duct installers. The system should be de-energized and airflow shut off before working on duct assemblies. Sleeve ends should be sealed with approved mastic or UL 181-rated tape to maintain rated R-value and prevent air bypass. Local energy codes, including IECC requirements, should be consulted to confirm insulation level compliance for the specific climate zone.