BOFA’s patented DeepPleat DUO pre-filter

Product focus - DeepPleat DUO pre-filters




Our DeepPleat DUO* is the longest lasting pre-filter available on the market. It extends the life of your main filter and reduces the cost of ownership of your extraction system.

Our patented DeepPleat DUO pre-filter incorporates a massive drop-out chamber within the base of the filter. Above this chamber but still within the housing there is a sealed deep pleat layer of F8 media giving a surface area in excess of 6/12/30 sq meters.

The DeepPleat DUO is available in three different sizes, offering different chamber sizes and surface media areas.

Our 2000 iQ and 4000 iQ units use multiple pre-filter configurations, to extend filter life even more. For system filter sizes, please see the chart on this page.

Many years of designing and manufacturing fume extraction and filtration systems for a variety of industries has given BOFA the experience and expertize to ensure that our product solutions are the best available on the market. Contact us if you are unsure about your specific application or want more information about your setup.

View our DeepPleat DUO pre-filter video.

*The DeepPleat DUO pre-filter is protected under patent copyright, design copyright and registered design laws.


Key features of the DeepPleat DUO


  • Patented technology
  • Large drop-out chamber
  • Double effect filter
  • Grade F8, filtering 95% of dust & particulates @ 0.9 microns
  • Metal casing (cartridge style) protects against harmful contaminants spilling out during filter changes
  • Reverse flow air filter design
  • Available in three sizes