Hart Cooley 27828 Hc F218 Insulated Flexible Air Duct R8 9 Inches X 25 Feet

Product Description

The Hart Cooley 27828 is a metalized insulated flexible air duct designed for residential and commercial HVAC systems. This duct measures 9 inches in diameter and 25 feet in length, making it a strong fit for trunk-to-register runs and branch duct connections in forced-air heating and cooling applications. The product carries an R8 insulation rating, which meets or exceeds energy code requirements in most jurisdictions across the United States. HVAC installers, sheet metal contractors, and mechanical trade professionals rely on flexible duct like this for its ability to route airflow through tight spaces where rigid ductwork is not practical. The outer jacket is a metalized polyester film reinforced with a fiberglass scrim layer. This construction resists moisture vapor transmission and holds up in attic, crawlspace, and plenum environments. The core is a double-ply black polyester material that maintains shape under airflow pressure and reduces the risk of collapse during installation or operation. Maximum rated airflow for this duct is 5000 cubic feet per minute, which suits a wide range of residential and light commercial air handler configurations. The product is UL Listed under UL 181 Class 1, confirming it meets fire and safety standards required for use in air distribution systems. It also complies with ASTM C518 and ASTM E96 standards for thermal performance and vapor transmission. The duct ships in a compact box format that keeps the product protected and makes jobsite handling easier. It installs quickly with standard duct straps, mastic, or UL 181-rated tape. Contractors can cut it to length on site using standard tools, reducing material waste and labor time on HVAC rough-in and retrofit projects.

• R8 insulation rating meets strict energy code requirements for duct insulation in most regions
• Metalized polyester jacket with fiberglass scrim reinforcement resists moisture and physical damage
• UL 181 Class 1 Listed and tested to ASTM C518 and ASTM E96 standards for safe air distribution use

Product Highlights

The Hart Cooley 27828 delivers R8-rated thermal performance in a 9-inch by 25-foot flexible duct format, built to UL 181 Class 1 standards for reliable use in residential and commercial forced-air HVAC installations.

Product Information

Standard Information

• Brand: HART COOLEY
• Manufacturer Part Number: 27828

Technical Specifications

• Diameter: 9 inches
• Length: 25 feet
• R Value: R8
• Maximum Airflow: 5000 CFM
• Material: Plastic, Steel
• Material Type: Polyester
• Insulated: Yes
• UL Listed: UL 181 Class 1
• ASTM Standards: ASTM C518, ASTM E96
• UPC: 684048278289