... 2.Ultra-quite,energy saving design,long life 3.Deluxe ventilation Ceiling ventilation fan:Pleasing in appearance, surface gloss,and ultra-quite,energy saving ... Area6-8 m26-9 m28-12 m210-15 m2Pipe diameter80mm100mm100mm100mmBlandSONGTIANSONGTIANSONGTIANSONGTIAN/ flat silver plate ceiling ventilation fan