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Extract filter size: 205x205x46 mmSupply filter size: 205x205x46 mmFilter class (EN779): M5+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: 205x205x46 mmSupply filter size: 205x205x46 mmFilter class (EN779): M5+M5Filter 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
Pollen and moldCaptures pollen, mold spores, and other allergens
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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.
How do I find the right filter for my Oxygen ventilation unit?


The model designation is usually printed on the front cover near the filter access panel. We stock filter sets for Oxygen Easy and X-Air units — C180/C180E, C200/C200E, C250, V200/V200E and V400/V400E/V500/V500E/V600. If the label is worn or missing, measure your existing filter to confirm the right replacement.
What filter class does Oxygen use as standard?


Oxygen residential units are generally fitted with M5-class filters, with F7/ePM1 available as an upgrade for households wanting finer particle protection. Both classes are cut to fit the same housing without modification.
Are house brand filters a good fit for Oxygen units?


Yes — our house brand filters match the originals on every point that matters:
- Manufactured in the EU
- Built to the same ISO 16890 standards as Oxygen's original filters
- Cut to matching tolerances
That combination makes them a reliable, lower-cost alternative for regular replacement.
How fast do you deliver Oxygen ventilation filters within Finland?


We stock the standard Oxygen filter sizes for fast dispatch, with in-stock orders leaving within 1–2 business days. Oxygen units are less common in Finland than the Nordic brands, so keeping the usual classes in stock avoids the delays that come with ordering them in from abroad each time; sizes that must be made to order are marked as such and take 5–10 business days.
I’m not sure of my Oxygen model — what do you need to identify the filter?


The dimensions are usually enough on their own. Take the old filter out and measure it in millimetres — width, height and thickness — note the class printed on the frame if it is still readable, and note which side it came from, supply or extract. A photo of the rating plate helps too, even a partial one. This matters with Oxygen in particular because the units are less common in Finland than the Nordic makes, and closely named models such as the X-Air C200 and V200 do not take the same filter. Send us the measurements and we will confirm the size before you order.
What happens if an Oxygen filter I order turns out not to fit my unit?


If an ordered filter doesn't match your Oxygen unit, contact us and we'll exchange it for the correct size or class, provided it's unused and in its original packaging. Sharing your model code or exact filter measurements when ordering is the simplest way to get it right the first time.
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