901 CFM 4.1 Sones. (AMCA) • 120 VAC, 2.6 AMPS. • 8" x 12" duct. • Sound absorbing acoustic insulation. • Painted white enamel steel grille. • Single, impact-resistant centrifugal blower wheel. • Can be ducted horizontally or vertically. • cUL & UL Listed. Incredibly reliable. Unbelievably quiet. Offering the CFM choices you need at the lowest sound levels in the industry. Commercial ventilators perfect for conference rooms, bathrooms, commercial kitchens or any other area that requires quiet, continuous ventilation. With a low profile grille that blends seamlessly with the ceiling. Models available with white polymer or painted white enamel steel grille. Use Broan Electronic Variable Speed Control to adjust blower speed and sound level (available separately).