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The HART COOLEY 11000814 is a pre-insulated flexible duct sleeve designed for use in residential and light commercial HVAC duct systems. The sleeve features a metalized polyester jacket over R-8.0 formaldehyde-free insulation, providing thermal performance in both supply and return air applications. At 14 inches in diameter and 5 feet in length, it is sized for trunk-line transitions, equipment connections, and short flexible duct runs where a pre-insulated sleeve simplifies installation. HVAC technicians and sheet metal installers use this sleeve to speed up connections while meeting energy code insulation requirements.
This sleeve is suited for residential forced-air systems and light commercial HVAC applications where code requires a minimum R-8.0 duct insulation value. The silver metalized jacket is the standard finish for attic, crawl space, and unconditioned space installations where vapor retardancy and reflectivity matter. The 5-foot length works well for short equipment-to-duct transitions and flex duct connector sleeves in air handler installations.
Designed as a standard-format flexible duct sleeve for use with 14-inch diameter duct fittings, collars, and air handling equipment connections in residential and light commercial forced-air HVAC systems.
Installation should be performed by a licensed HVAC technician or qualified sheet metal contractor. Power down the air handling unit at the disconnect before making any duct connections. Secure each end of the sleeve with approved duct straps or draw bands and seal with mastic or UL 181-rated tape in accordance with local mechanical codes. Do not compress the insulation layer, as compression reduces effective R-value.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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