... 2.lower noise&good ventilation 3.power-saving . Window ventilating fan,window exhaust fan: Pleasing in appearance, surface gloss, ... after received deposit (according on the order) Specifications1. window ventilating/ventilation fan/exhaust fan2. competitive price and good ... saving design, long life, and easy of installation. Window-typeVentilatingFansdetailsModel NoAPC-10-1APC-15-3APC-20-1Panel Size165* ...