VTS Ventus VS 21 filter set M5+M5+M5+M5 (house brand)
VTS Ventus VS 21 filter set M5+M5+M5+M5 (house brand)
Filter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
General dust and particle filtration
Captures pollen, mold spores, and other allergens
Key features of this product
Certified quality to international ISO standards
Manufactured entirely within the European Union
Effective filtration for up to 6 months.
Price for set
Model compatibility
Compatible with:
- VTS Ventus VS 21
The set contains four filters of the same size: two extract-air filters and two supply-air filters. It is a compatible replacement for VTS Ventus VS 21 units built with bag-filter frames in both the extract and the supply air stream. Ventus VS 21 is a unit size, not one fixed configuration, so this set does not fit every VS 21 unit: before ordering, compare the unit's Technical Data Card, the filter-section arrangement, the frame dimensions, the pocket length and the original filtration requirements. The all-M5 configuration of this set is not claimed to be the original factory configuration of every VS 21 unit.
What the filter set protects against
Filters are listed in extract → supply order:
- 2 x M5 extract-air filter: ePM10 55%, reduces dust and other airborne particles entering the unit from the indoor air
- 2 x M5 supply-air filter: ePM10 55%, reduces dust, pollen and mould spores in the incoming outdoor air
M5 is a former EN 779 class. These particulate filters do not remove gases or odours.
Use and maintenance
Switch off and isolate the ventilation unit before replacing the filters. Install two filters in each air section, observe the airflow markings and check the seal around the frame and the clearance for the pockets. Follow the unit's filter alarm and the permitted final pressure drop.
VTS gives an approximate replacement interval of twice a year under standard conditions; inspect the filters more often in dusty conditions. A typical replacement interval is 3–6 months, depending on use and contamination. Do not wash these disposable bag filters. Separate prefilters or additional filtration stages are not part of this set.
Manufacturing quality
Our house-brand filters are manufactured by AORA, a reputable and well-known filter manufacturer. This set consists of bag filters with four pockets per filter and metal frames. It is a compatible house-brand replacement, not an original VTS filter set.
Original product codes
- VTS 1-2-0303-0074: original individual M5 bag filter.
- AORA AORS0000184: this compatible four-filter set.
The VTS code identifies the original individual filter, not a packaged set or this AORA set.
| Filter Type / EN 779 Class | ISO 16890 Class | Efficiency (%): Coarse (>10 µm) | PM10 (≤10 µm) | PM2.5 (≤2.5 µm) | PM1 (≤1 µm) | Gas/VOC Removal | Real-Life Particle & Pollutant Examples |
|---|---|---|---|---|---|---|---|
| G1 | ISO Coarse | ~40% | <10% | ~0% | ~0% | Sand, textile fibers, carpet fluff, plant debris, insect wings, visible lint | |
| G2 | ISO Coarse | ~50% | <15% | ~0% | ~0% | Sawdust, hair, coarse textile particles, large flakes of paint or rust | |
| G3 | ISO Coarse | ~60% | <25% | ~5% | ~0% | Coarse dust, lint, animal hair, some pollen | |
| G4 | ISO Coarse | 65-75% | 25-35% | 10-15% | <5% | Large pollen grains, soil particles, textile lint | |
| M5 | ISO ePM10 ≥50% | ~80% | 50–65% | 20–30% | 10–15% | Pollen, mold spores, pet dander, house dust | |
| M6 | ISO ePM10 (60–80%) | ~90% | 65–80% | 30–45% | 15–25% | Building/construction dust, concrete dust, ash particles, fine cement dust | |
| F7 | ISO ePM2.5 (50–65%) | >90% | 75–90% | 50–65% | 30–45% | Bacteria, smog, tobacco smoke particles, combustion dust, spores, wildfire smoke particles | |
| F8 | ISO ePM2.5 (65–80%) | >95% | 85–95% | 65–80% | 45–60% | Fungal spores, air pollution aerosols | |
| F9 | ISO ePM1 (80–95%) | >95% | >95% | >90% | 80-95% | Diesel soot, airborne viruses, smoke from traffic and industry, combustion particles, ultra-fine dust, secondary organic aerosols from chemical reactions in air | |
| Activated Carbon | Not classified (gas filter) | Varies (combined with prefilter) | Varies | Varies | Varies |
High Efficiency |
Volatile Organic Compounds (VOCs), formaldehyde, ozone, nitrogen dioxide (NO₂), sulfur dioxide (SO₂), benzene, toluene, cooking odors, cigarette smoke odors, pet smells, perfumes |
Order Processing Time
All in-stock products are dispatched within 1–2 business days, except for clearly marked items with an extended dispatch time (5–10 business days).
Shipping Costs
Shipping is free for all orders over 150 €. For orders up to 150 €, shipping costs will be calculated at checkout.
Order Tracking
Once your order has been dispatched, we will send you a confirmation email with tracking details so you can easily follow its journey to you.
Business Days
Delivery times are calculated in business days – from Monday to Friday, excluding public holidays.
Easy returns within 30 days
You may return any product within 30 days of receiving it for a full refund – no questions asked!
If you need to return items after 30 days, please contact us. We review these requests on a case-by-case basis and will do our best to help.
Condition of returned products
We accept returns of products unused in intact condition, including those unpacked but not damaged. Products that are damaged, dirty, or otherwise unusable cannot be accepted for return.
Defective or incorrect items
If you receive a defective or incorrect product, please contact us immediately. We will ensure the issue is resolved promptly, as your satisfaction is our top priority.
How to return an item?
Please contact us before sending back any products. We will provide you with the return shipping details and assist you throughout the process. We cover all costs of return shipping.
Refund processing timeline
Once your returned product is delivered to us, we will verify its condition within 5 working days. Refunds will be processed within an additional 5 working days after approval, using the original payment method.
Is it possible to cancel my order?
Yes, cancellations are possible before your order has been shipped.
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