FeaturesDouble strength steel mounting flanges with keyhole slots for fast installation is a plus70 cfm at 6 Sones reduces humidity or odors in bathrooms upto 65 sq-ft to help make your surroundings more comfortableUL listed for use over tub or shower with a GFCI circuit so you can control ventilation by locating your fan exactly where you need it the mostHorizontal duct direction2 x 4 in minimum construction space requiredNo nightlightSlotted mounting brackets for easy installationSingle coil, thermally protected plug-in motor extra large junction boxDischarge is through 3 in round duct through roof or wallAttractive white polymeric grille with torsion springs to adjust for thickness variances in ceiling or wallNot for use in kitchensMounts on 16 to 24 in on-center joists or studsHousing has collar for 3 in round duct and discharges vertically or horizontallyPower unit snaps into housing for quick assemblyTorsion springs on grille adjust for thickness variances in ceiling or wall70 cfm at 0.1 in SP