Good points

Filter set
2x G3 filters
Free filter service

Itho HRU G 225/275 + W 250/350 WTW filter set G3

2x Wire frame filter 196x395x5 mm. G3

The G3 filter set from Itho is suitable for the HRU G 225/275 + W 250/350 WTW. This high-quality filter ensures optimal operation of the ventilation system and healthier, filtered indoor air. Also check the prices for purchasing 2, 5, or 10 pieces, as the price will be automatically reduced!

Which WTW systems are these filters suitable for?
The Itho HRU G 225/275 + W 250/350 WTW filter set G3 corresponds to the WTW filters from Itho with the following article numbers:

545-4810 / 540-7003 / 540-7004 / 540-7005 / 540-7006 / 540-7007 / 540-7009 / 540-7010 / 540-7020 / 540-7021 / 540-7022 / 540-7023 / 540-7024 / 540-7025 / 540-7026 / 540-7027 / 540-7028

Free filter service

Everyone has the right to breathe clean air. Checking/cleaning or replacing filters plays an essential role in this. In practice, this is often neglected. We take care of this. Along with your order of your filter set, you will also receive:

- Free quarterly reminder
- Personal (filter) offers
- Tips and tricks for extending the lifespan of your filters

Comparing filter classes

You may have heard of the new ISO16890 filter standard. The old filter classes (G4, M6, F9, etc.) will gradually disappear and make way for the new standard. To avoid confusion and to make it clear for you, below is a table comparing the old filter classes with the new standard.

Filter class	ISO Coarse	ISO ePM10	ISO ePM2.5	ISO ePM1
G3	> 45 %	-	-	-
G4	> 90 %	-	-	-
M5	> 95 %	> 50 %	-	-
M6	> 95 %	> 60 %	50 - 60 %	-
F7	> 95 %	> 85 %	65 - 80 %	50 - 65 %
F8	> 95 %	> 90 %	> 80 %	65 - 80 %
F9	> 95 %	> 95 %	> 95 %	> 80 %

More information
Article - New regulations and standards for filters
Article - Consequences of poor ventilation

Brand	Econox
Category	Itho Daalderop HRU 2 MVHR Filters
GTIN	8719544142023
Manufacturer's item number	38004001
Article number	38004001

Specifications

Width	395 mm
Category code	89
Depth	5 mm
Unit	Set
Filter class filter 1	G3
Filter class filter 2	G3
Filter class ISO filter 1	ISO grof 50%
Filter class ISO filter 2	ISO grof 50%
Suitable for MVHR brand	Itho Daalderop
Suitable for MVHR type	HRU G 225/275 + W 250/350
Length	196 mm
Filter material	Synthetic

Reviews

Blogs

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Filter class G4, M6, F9, and so on. For those who have a MVHR system, these terms are probably not unfamiliar. Since August 2018, something has changed: the filter standard EN779 has been replaced by ISO16890. This means that previously mentioned terms will give way to new, more specific designations. In this blog, we would like to explain the differences.

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