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Ducts, Dampers, Adapters & Caps
Broan-NuTone® 4" to 5" Duct Expander
The Broan-NuTone® 4" to 5" duct expander is designed to fit ventilation fans with a 4" duct connector. It will work with 5” round duct systems, is UL 94 compliant for flammability, and made in the USA.
- Expand from 4" to 5" duct
- Allows easy connection of a ventilation fan (with 4" round duct connector) to 5" round ducting
- UL 94 compliant for flammability