PG4-25 – Pre-filter with filter blanket

Technical data


  • Grammage: 290 g/m2
  • Composition: Synthetic polyester fiber
  • Approximate thickness: 22mm
  • Nominal working speed: 1.5 m/s
  • Flow m2: 5,400 m3/h
  • Initial pressure loss: 42 Pa
  • Recommended final pressure drop: 250 Pa
  • Load loss supported: 450 Pa
  • Average filtration EN779: 90%
  • Efficiency according to ISO 16890: ISO COARSE 65%
  • Maximum temperature: 100ºC
  • Relative humidity resistance: 100%
  • Fire resistance: F1
  • Dust collection capacity: 603 g/m2

Main features

Panels with a G4 filter blanket are designed for filtration in ventilation systems and air treatment systems where a high degree of air cleanliness is required. The blanket is made of non-woven synthetic polyester fiber thermally compacted into different layers of fibers creating a progressive structure and higher density in the part where the clean air is found. This type of blanket has a great dust retention capacity, supporting high air flows and showing 100% water resistance without collapsing like other untreated filters. The supply is made with a metal support in galvanized steel painted in oven-dried polyester gray RAL 7035 or in AISI-304 stainless steel.

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