50/80/110 cfm Flow Rate, 4 in, 6 in Diameter Duct, 120 V, 0.5 A, 60 Hz Frequency, 12/19/26/7.7/13.3/18.2/4.7/8.6/12.3 W Power, 1600 W Heater Wattage, 16 in L x 10-1/4 in W x 4-1/2 in H Housing, Ceiling Mounting, 13-1/4 in L x 18-1/4 in W Grille, Poly Pro Grille, Aluminum/Magnesium/Zinc Housing Material (Price subject to change without notice. Check stock before order)