Broan-NuTone economy energy star series fans are versatile, compact and economical ventilation solutions. with a galvanized steel housing and double-strength mounting flanges, the economy fan offers powerful ventilation performance with Energy Star for 2.0 sones, that helps ventilate air to prevent mold and mildew. Also including a removable motor assembly and plug-in permanently lubricated motor for ease of service and cleaning.50 cfm, sufficient ventilation to remove odors and pollutants from your smaller powder room or bathroomCompact housing with foldable mounting brackets for no cut and versatile installationPowerful enough for rooms up to 45 sq-ftBrighter white grilles blend in to match most common ceiling paintCorrosion-resistant galvanized steel housing stands up to moisturePermanently lubricated AC motor engineered for continuous operationDouble-strength mounting flanges with keyhole slotsQuiet polymeric damper prevents cold backdrafts with no metallic clatterNo electrical knockout to remove