Hart Cooley 11000808 Flexible Duct Sleeve 8in 5ft R-8.0

Product Description

The HART COOLEY 11000808 is a flexible duct sleeve designed for HVAC air distribution applications requiring pre-insulated jacketing. The sleeve features a metalized polyester outer jacket over R-8.0 formaldehyde-free insulation and a polyethylene inner construction, delivering a coreless design intended for wrapping or enclosing existing duct runs. At 5 feet in length and 8 inches in diameter, this sleeve ships boxed and is ready for field installation by licensed HVAC technicians on both new construction and retrofit projects. The R-8.0 insulation value meets common energy code requirements for unconditioned space duct runs.

This sleeve is suited for residential and light commercial HVAC systems where duct sections pass through attics, crawlspaces, or other unconditioned areas. The coreless, slip-on sleeve format works with existing rigid or flexible duct segments of matching diameter. Its UL Classified rating and formaldehyde-free insulation make it appropriate for occupied or sensitive-use buildings. HVAC contractors and sheet metal technicians typically use this product during duct system insulation upgrades or as part of new installation work.

Key Features

• R-8.0 formaldehyde-free insulation for high thermal performance in unconditioned spaces
• Metalized polyester jacket provides durable outer protection
• Coreless design slips over existing duct runs without a separate inner liner
• UL Classified construction for use in code-compliant HVAC installations
• 5-foot length reduces field splicing on standard duct runs
• Polyethylene material construction supports moisture resistance

Compatibility

Designed as an OEM-style flexible duct sleeve for 8-inch diameter HVAC duct sections in residential and light commercial air distribution systems.

Installation Notes

Installation should be performed by a licensed HVAC technician in accordance with applicable local mechanical codes and SMACNA guidelines. Power down the air handler and confirm the system is de-energized before working on connected duct sections. Secure sleeve ends with approved duct tape or mastic sealant rated for the application to maintain the insulation continuity and prevent air bypass. Do not compress the insulation layer, as compression reduces the effective R-value.