Best Bathroom Exhaust Fans for 4-Inch Ducts As a category, these fans perform better in terms of airflow than fans built to fit a 3-inch duct. These models do a good job of evacuating air through ...

When you shop through retailer links on our site, we may earn affiliate commissions. 100% of the fees we collect are used to support our nonprofit mission. Learn more. As a category, these fans ...