Hart Cooley 27825 F218 Series Insulated Flexible Duct 6 Inches X 25 Ft R-8

Product Description

The Hart Cooley 27825 is a residential-grade insulated flexible duct from the F218 Series, designed for use in HVAC air distribution systems in homes and light commercial buildings. This duct measures 6 inches in inside diameter and comes in a 25-foot length, making it well suited for connecting supply air outlets, registers, and diffusers to central air handlers and duct trunk lines. The round cross-section allows for smooth airflow and easy routing through tight spaces such as attics, crawl spaces, and interior wall cavities. HVAC technicians and installers rely on flexible duct like the 27825 to complete residential duct runs quickly and efficiently without the need for rigid sheet metal fabrication in every section of the system. The inner core is constructed from polyester, which provides durability and resistance to tearing during installation and over long service life. The outer jacket is made from metalized polyester, giving the duct a silver metallic appearance and providing a vapor barrier that helps prevent condensation from forming on the exterior surface. One of the most important features of this duct is its R-8 insulation value. An R-value of 8 significantly reduces heat gain and heat loss as conditioned air travels through unconditioned spaces such as attics. This directly improves system efficiency and helps maintain the target delivery temperature at each register. The duct is rated for air velocities up to 5000 feet per minute and an operating temperature range of -20 to 140 degrees Fahrenheit, making it compatible with both heating and cooling applications. This product is domestically produced and sold as a single unit. It is a standard and widely used product for residential HVAC replacement and new construction duct work.

• 6-inch inside diameter with 25-foot length for flexible residential duct runs
• R-8 insulation value reduces heat transfer in unconditioned spaces such as attics and crawl spaces
• Metalized polyester outer jacket provides a vapor barrier and resists moisture accumulation

Product Highlights

The Hart Cooley 27825 F218 Series flexible duct delivers R-8 insulation performance in a 6-inch by 25-foot round duct, purpose-built for residential HVAC supply air distribution. Its metalized polyester jacket and polyester core construction provide durability, moisture resistance, and efficient conditioned air delivery.

Product Information

Standard Information

• Brand: HART COOLEY
• Manufacturer Part Number: 27825

Technical Specifications

• Product Family: F218 Series
• Product Type: Insulated Flexible Duct
• Inside Diameter: 6 inches
• Length: 25 ft
• Shape: Round
• R-Value: 8
• Insulated: Yes
• Core Material: Polyester
• Jacket Material: Metalized Polyester
• Color: Silver / Metallic
• Max Air Velocity: 5000 fpm
• Operating Temperature Range: -20 to 140 degrees Fahrenheit
• Package Quantity: 1