Patented Labyrinth pre-filters
Extends the life of the main filter by capturing larger particles before they reach the HEPA filter
Fits neatly under the main filter in integral Purex extractors
Graduated fiber matrix delivers excellent particle capture capacity - up to 20 times more than a standard filter
Ideal for medium-high volume applications
Contains the particles inside for clean and simple disposal
Composite material available for extra filter life and filtration down to 0.5 micron
Standard captures particles to 3 micron at efficiency of 60 to 80%
Composite captures particles to 1 micron at efficiency of 80 - 95%