An EU2 dust pre-filter to filter dust from the air before it passes through the activated carbon filter.
Filter to be cleaned every 6 months by blowing it out with compressed air or, if not possible, scraping it with a brush.
Change every 1600 hours.
Please indicate the filter outlet diameter to identify the filter reference:
Ø 20cm Ref. 502132
Ø 25cm Ref. 502132/B
Ø 31,5cm Ref. 502132/C
because each housing reference has filters of appropriate dimensions.