UL® 181 Foil Duct 50' Length 4" Diameter

• Designed for low to medium operating pressures in HVAC systems. (Not for use to vent appliances for cooking, heating, and clothes drying unless approved and recommended by the appliance manufacturer.)
• Class 1 Air Connector label meeting NFPA (90A and 90B).
• Tear and Puncture Resistant
• Encapsulated wire helix does not unravel when cut to length
• Air tight construction and smooth inner core
• Steel Wire Support

¹ Manufacturer assumes no responsibility for failure due to improper installation.
All specifications and designs are subject to change without notice and without incurring liability.

² INSTALLATION: Air duct connections and joints shall be made per installation instructions outlined by Builder's Best and as required by the UL 181 listing procedure. (Installation instructions are included inside each carton.) Air connectors shall not be installed in lengths greater than 14 feet for any given run.

WARRANTY EXCLUSION AND DISCLAIMER Seller specifically excludes, and hereby disclaims any express representation or express warranty of any kind with respect to the goods ordered hereunder. All implied warranties, including without limitation merchantability or fitness for a particular purpose or arising from a course of dealing or usage or trade shall expire and cease 45 days after date of delivery. Seller shall not be liable to buyer or any third party for any special, secondary, incidental, or consequential damages however arising. Nothing in this provision shall invalidate or restrict any right or remedy otherwise available under state or federal law. Materials and specifications subject to change without notice.