ducting
air king america 916270 energy star quiet zone bath fans 4 inch metal duct
features sones 6 cfm 80 deluxe quiet exhaust 4 in metal duct collar with back draft motors are suitable for continuous operation install using the adjustable hanging brackets for 16 in centers ul listed over a tub or shower on a gfci circuit hvi2100 certified at the highest point the grill projects only 50 in down from the ceiling the electronically balanced centrifugal blower wheel assures maximum ventilation with minimum sound dimension 14 50 x 12 00 x 9 00 in item weight 11 50 lb sku orgl30514