Tjernlund Fresh Air In-Forcer
WHITE BEAR LAKE, MN — Tjernlund Products' Fresh Air In-Forcer is an effective, affordable way to supply fresh outside air to dilute trapped pollutants and replace air vented by exhaust fans and fuel-burning equipment in residential structures.
The Fresh Air In-Forcer system consists of a fan and exterior hood that can be installed through a 4-inch round exterior wall opening. Operating control options include manual operation by plugging into to 115 VAC switched outlet, plug-in timer operation for a desired schedule or dehumidistat control operation. Standard 4-inch flex or metal duct may be used for ducting. The quiet, high efficiency 90 CFM fan consumes 18 watts.