Pipeline Type Ventilating Fan (metal type) 1,Size:8",10",12" 2,Power:25W,28W,45W 3,Air volume:8.2M3/MIN,11M3/MIN,16M3/MIN Pipeline Type Ventilating Fan (metal type)Feartures:1,All plastics design and reasonable price. 2,The plate is designed as spring device,which is structure compact,space large,dismounting conveniently and cleaning easily.3,Use the advanced centrifugal wind wheel,high quality ...