Pleated pre filter(Foldaway coarse filter mesh)
(1) Low weight, economic cost
(2) Disposable products, environmentally
(3) Low resistance, large filter area, high air flow
(4) Cardboard frame with special process, with long working time
(5) Thickness available: 21mm, 25mm, 46mm, 96mm, etc.
Frame: Aluminum Frame/Galvanized frames/cardboard frame
Face net: Paint-sided care net/aluminum net
Filter media: Polycotton, white color and blue color.