Getting an exhaust fan to put out just 1 sone of noise (about the same as a quiet refrigerator) at 80 cfm of airflow usually requires a housing too big for a 2x4 wall. NuTone’s LPN80 achieves that level of quiet yet is thin enough to fit in that wall, thanks to a redesigned blower and wheel assembly. The fan’s low profile should also provide more flexibility in ceiling installation, where pipes and other utilities may already be in place in the joist bay. The LPN80 comes with two duct connectors — a standard 4-inch oval and an adapter for the 3-inch round ducts found in some older homes — and costs $140.
Broan-NuTone, 888/336-3948, nutone.com.