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Extract filter size: 258x152x20 mmSupply filter size: 258x152x20 mmFilter class (EN779): F7+F7Filter quantity in a set: 2 filtersProtection level
Filter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
BasicGeneral dust and particle filtration
Pollen and moldCaptures pollen, mold spores, and other allergens
Smog and bacteriaProtects against allergens and urban pollution
Extract filter size: 258x152x20 mmSupply filter size: 258x152x20 mmFilter class (EN779): G4+G4Filter quantity in a set: 2 filtersProtection levelFilter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
BasicGeneral dust and particle filtration
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Customer Reviews
Need Help? Start Here.
We’ve gathered answers to the most common questions about our products and services. If you can’t find an answer here, please contact us directly.
Do the HRU ECO 150/200 and HRU ECO 350 use the same filters?


No. The HRU ECO 150 and 200 share one filter size, while the HRU ECO 350 takes a different set. Check the model code on the sticker inside the front cover before ordering, then choose G4+G4 or F7+F7 in the matching size.
How fast can you deliver Itho Daalderop filters within the Netherlands?


Itho Daalderop filters typically ship within a few business days to addresses across the Netherlands. Because HRU ECO units are so common in Dutch new-build housing, we keep both filter classes for them in stock to avoid delays.
My Itho Daalderop HRU ECO filter indicator is on — what should I do?


The filter indicator on HRU ECO units is a maintenance reminder. Check the filters, fit a new set if they are dirty — which they usually are after 3–6 months — and reset the indicator as described in your manual. Resetting it without changing the filters only postpones the reminder while airflow keeps dropping.
What filter class fits an Itho Daalderop HRU ECO unit?


For each HRU ECO size we stock two original sets:
- G4+G4 — coarse filters on both sides, the standard option
- F7+F7 — fine F7 (ePM1) filters that also catch pollen and fine dust
The F7 set is the better choice for allergy sufferers or homes near busy roads.
Which Itho Daalderop units does your catalogue cover?


We stock original filter sets for the Itho Daalderop HRU ECO range — HRU ECO 150/200 and HRU ECO 350 — one of the most widely installed balanced ventilation units in Dutch new-build housing. The model code is usually printed on a sticker inside the unit's front cover.
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