It has 4-Inch horizontal duct connector for quiet operation. Fan has white galvanized steel housing for corrosion resistance. It has voltage rating of 120-Volt AC and current rating of 1.6-Amps. It has sound level of 2.5 Sones. Ceiling mountable fan has white polymeric grille that measures 10-3/4-Inch x 12-Inch. Fan is UL listed and CSA certified.