Hart Cooley 11000809 Flex Duct Sleeve 9in R-8 5ft

Product Description

The HART COOLEY 11000809 is a 9-inch diameter, 5-foot flexible duct sleeve designed for HVAC venting applications. It features a metalized polyester jacket over R-8.0 formaldehyde-free insulation, making it suitable for energy-efficient duct runs where thermal performance is critical. The sleeve has no core, functioning as a slip-on insulating cover rather than a standalone duct. The polyethylene material construction keeps weight low while maintaining structural integrity during installation. HVAC technicians use this sleeve to insulate existing flex duct or rigid duct sections in residential and light commercial systems where UL Classified components are required.

This sleeve is used in HVAC venting installations where insulated duct assemblies must meet energy code requirements. Common applications include attic, crawlspace, and unconditioned space duct runs where ambient conditions demand high R-value insulation to minimize heat gain or loss. The coreless design allows the sleeve to be slipped over pre-installed duct sections without disassembly of the existing run, saving time on retrofit and replacement jobs. It ships in a boxed package suitable for job-site handling.

Key Features

• R-8.0 formaldehyde-free insulation for high thermal performance and indoor air quality compliance
• Metalized polyester jacket provides vapor and radiant barrier protection
• 9-inch diameter fits standard large-diameter residential and light commercial duct
• 5-foot length per sleeve reduces the number of joints needed on longer runs
• Coreless construction allows installation over existing duct without full disassembly
• UL Classified for use in applicable HVAC duct system assemblies

Compatibility

Designed as an OEM-style insulating sleeve for 9-inch diameter HVAC flex duct and rigid duct venting applications in residential and light commercial systems.

Installation Notes

Installation should be performed by a licensed HVAC technician in accordance with local mechanical codes and SMACNA duct insulation guidelines. Power down the air handling unit and confirm the system is de-energized before working on duct assemblies. Slide the sleeve fully over the duct section and secure all joints and seams with approved foil tape to maintain the vapor barrier and R-value continuity. Avoid compressing the insulation, as compression reduces effective R-value.