Hart Cooley 51044 F214 Flexible Insulated Air Duct 16 Inches X 25 Ft Class 1 R4.2

Product Description

The Hart Cooley 51044 is a flexible insulated air duct from the F214 series, designed for use in residential and commercial HVAC installations. This duct measures 16 inches in inside diameter and comes in a 25-foot length, making it a practical choice for longer duct runs where pre-cut sections may fall short. The F214 series is built with a polyester and metalized polyester construction, combining flexibility with durability for both new construction and retrofit applications. HVAC technicians rely on this type of flexible duct to connect air handling units, plenums, and diffusers in tight or irregular spaces where rigid sheet metal duct is not practical. The duct carries a Class 1 insulation rating, which meets standard building code requirements for air distribution systems. Its R4.2 insulation value helps reduce thermal loss as conditioned air travels through the duct system, improving overall system efficiency and comfort. The vapor transmission rate of 0.04 perm provides a strong barrier against moisture migration, which is critical in humid climates or when duct runs pass through unconditioned spaces such as attics and crawlspaces. This duct is rated for airflow up to 5000 feet per minute, supporting high-velocity systems without risk of collapse or deformation. The pressure rating of negative one-half to 12 inches water column covers the full range of typical forced-air system operating pressures, including both supply and return applications. The temperature range of negative 20 to 140 degrees Fahrenheit allows reliable performance through cold startups and high-output heating cycles. Domestically manufactured, the Hart Cooley 51044 is a dependable component for any HVAC installer or service technician working on ducted air systems.

• 16-inch inside diameter with 25-foot length for extended duct runs in residential and commercial HVAC systems
• R4.2 insulation value and 0.04 perm vapor transmission rate minimize thermal loss and moisture intrusion
• Rated up to 5000 fpm airflow and negative one-half to 12 inches water column pressure for broad system compatibility

Product Highlights

The Hart Cooley 51044 F214 flexible insulated duct delivers Class 1 performance in a 16-inch by 25-foot format, offering HVAC professionals a reliable, code-compliant solution for both supply and return duct applications across a wide range of operating conditions.

Product Information

Standard Information

• Brand: HART COOLEY
• Manufacturer Part Number: 51044

Technical Specifications

• Series: F214
• Type: Insulated Class 1
• Inside Diameter: 16 inches
• Length: 25 ft
• Material: Polyester and Metalized Polyester
• Insulation Value: R4.2
• Vapor Transmission: 0.04 perm
• Flow Rate: 5000 fpm
• Pressure Rating: -1/2 to 12 in-WC
• Temperature Rating: -20 to 140 deg F
• Domestic/Import: Domestic