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Builder's Best Wire Helix Foil Duct 4 in 25 ft
Designed for low to medium operating pressures in HVAC systems.
- This wire helix product features steel wire support with a multi-ply design of metalized polyester and aluminum/polyester laminate.
- UL® 181 listed and labeled as a Class 1 Air Connector and meeting NFPA (90A and 90B).
- Tear and Puncture Resistant
- Air tight construction and smooth inner core
- Encapsulated wire helix does not unravel when cut to length
- UL® sticker every 10 feet
- Maximum velocity rating 5000 fpm
- Not for use as dryer venting, cooking appliances or heating unless approved by the appliance manufacturer.
| Brand | Builder's Best |
| Length | 25 ft |
| Size | 25 ft x 4 in |
| Includes | 1 in pitch |
| Diameter | 4 in |
| Builder's Best Document |
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