4" X 25' Foil Flex Duct

05502504 Hart & Cooley Flexible Aluminum Foil Duct

The Hart & Cooley 05502504 Flexible Aluminum Foil Duct is engineered for professional HVAC system installations requiring an all-metal air duct assembly. This uninsulated flexible duct provides structural integrity and temperature resistance suited for both residential and commercial ventilation systems. Its all-aluminum construction meets building code requirements for metallic ducting and ensures reliable airflow performance in confined or high-temperature environments.

Technical Specifications

• Manufacturer: Hart & Cooley
• Model Number: 05502504
• Type: Flexible Aluminum Foil Duct (Uninsulated)
• Diameter: 4 inches
• Length: 25 feet
• Material: Aluminum / Aluminum Foil Laminate
• Thermal Performance: R6.0 Equivalent (Foil Composition)
• Maximum Operating Temperature: 250°F (121°C)
• Air Velocity Rating: Up to 5000 FPM (typical HVAC design)
• Static Pressure Rating: 10" W.G. positive / 1" W.G. negative
• Certification: UL 181 Class 1 Air Duct (F216)
• Application: Metallic ductwork for HVAC supply, return, and exhaust where aluminum ducting is code-required
• Color: Metallic Aluminum

Professional Notes

This duct is designed for professional use in HVAC installations where code mandates all-aluminum construction. The flexible foil laminate structure maintains dimensional stability and facilitates routing through restricted or offset spaces. The duct must be mechanically fastened and sealed in accordance with SMACNA standards and local mechanical codes. Suitable for above-ceiling or exposed installations where uninsulated ductwork is permitted. Not intended for concealed plenum or dryer vent use unless specifically approved by local authority.

Summary

The Hart & Cooley 05502504 (F216) 4" x 25' Flexible Aluminum Foil Duct provides a compliant, all-metal solution for professional HVAC installations. With a 250°F temperature rating, R6.0 foil performance, and UL 181 Class 1 certification, it delivers durability, airflow efficiency, and installation versatility for contractors meeting code-driven ducting requirements.