Hart Cooley 51114 Insulated Duct Sleeve 8 in X 5 Ft R4.2

Product Description

The HART COOLEY 51114 is an insulated flexible duct sleeve designed for use in residential and light commercial HVAC air distribution systems. The sleeve measures 8 inches in diameter and 5 feet in length, providing a ready-to-install section for connecting supply or return air runs. It carries an R4.2 insulation value and features a black polyethylene outer jacket that resists moisture and physical damage. HVAC technicians and sheet metal contractors install this sleeve where a pre-insulated, fixed-length duct section is needed without custom fabrication on the job site.

This duct sleeve is suited for residential forced-air systems and light commercial HVAC installations where an 8-inch diameter air passage is required. It functions as a transition or extension piece between flexible duct runs, plenums, and boot connections. The black poly jacket holds up in attic, crawl space, and mechanical room environments where insulated ductwork is exposed to ambient moisture or temperature extremes.

Key Features

• R4.2 insulation rating reduces heat gain and heat loss along the duct run
• Black polyethylene outer jacket provides moisture resistance and durability
• 8-inch diameter fits standard residential and light commercial collar sizes
• 5-foot fixed length reduces on-site cutting and speeds installation
• Pre-insulated construction eliminates the need for field-applied duct wrap

Compatibility

Designed as an OEM-style replacement and standard-fit duct sleeve for 8-inch diameter HVAC supply and return air applications in residential and light commercial forced-air systems.

Installation Notes

Installation is typically performed by a licensed HVAC technician or sheet metal contractor. Power down the air handling unit and close all dampers before connecting or repositioning duct sections. Secure the sleeve to collars and fittings using approved duct clamps or draw bands, and seal all joints with UL 181-rated mastic or listed foil tape per local mechanical code requirements. Do not compress or kink the sleeve, as this reduces airflow and degrades the insulation value.

Technical Specifications

• Diameter: 8 inches
• Length: 5 feet
• Insulation R-Value: R4.2
• Jacket Material: Black Polyethylene
• Item Weight: 4 pounds
• Product Type: Duct Sleeve

Standard Information

• Brand: HART COOLEY
• Manufacturer Part Number: 51114