Wolf CWL-F/T-300 Filters
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House brandExtract filter size: 245x177x5 mmSupply filter size: 234x166x20 mmFilter class (EN779): G4+F7Filter 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
Smog and bacteriaProtects against allergens and urban pollution
House brandExtract filter size: 245x177x5 mmSupply filter size: 245x177x5 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
1-2 of 2The Wolf CWL-F/T-300 takes a 245x177mm filter set – a distinct size from the similarly-named CWL-300/400, despite both carrying “300” in the model name.
Wolf CWL-F/T-300 Filter Set
- G4+G4 (standard) – 245x177x5mm on both sides. From €9.90.
- G4+F7 (upgrade) – 245x177x5mm extract, 234x166x20mm supply. From €17.90.
G4+G4 Standard vs. G4+F7 Upgrade
G4+G4 is the standard choice for everyday coarse dust and pollen filtration. The G4+F7 upgrade swaps in a finer, deeper supply filter, adding protection against fine particles, bacteria and smog – a worthwhile step up for homes in built-up areas.
How F/T-300 Differs From CWL-300/400
It’s easy to assume “CWL-F/T-300” and “CWL-300/400” are the same unit, but they use different filter housings – 245x177mm for the F/T-300 versus 525x185mm for the 300/400. If your search for “CWL 300 filter” led you here, double-check your unit’s label: you may actually need the CWL-300/400 filter set instead.
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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.
Can I order a full year’s supply of Wolf CWL filters together, especially if paired with Wolf heating equipment?
Yes, ordering a full year's worth of CWL filter sets in one purchase is common, particularly for households already managing a paired Wolf heating system on a similar service schedule. Multi-set orders are typically priced lower per filter than buying individually.
Do smaller and larger Wolf CWL units use the same filter?
No — filter sizes depend on the model. The CWL-300 and CWL-400 Excellent share one set, while the CWL-180, CWL-F-150 and CWL-F/T-300 each take their own. Confirm your exact CWL variant on the unit's label before ordering, since the series name alone doesn't guarantee a matching size.
Does pairing a Wolf CWL unit with Wolf heating affect filter maintenance?
The ventilation and heating functions operate independently in terms of filter maintenance, but combined Wolf systems often run ventilation more consistently to support overall climate control, so it's worth checking CWL filters on the shorter end of the standard 3–6 month interval.
What filter class is standard for Wolf CWL units?
It depends on the model. For each CWL unit we stock two versions:
- CWL-300/400 Excellent — G3+G3, or G3+F7
- CWL-180 Excellent — G3+G3, or G3+M6
- CWL-F-150 and CWL-F/T-300 Excellent — G4+G4, or G4+F7
The version with the finer supply filter (F7 or M6) is the better choice for pollen and fine dust.
Which Wolf ventilation units does your filter catalogue cover?
We supply filter sets for Wolf's CWL Excellent range — CWL-180, CWL-300/400, CWL-F-150 and CWL-F/T-300 Excellent — the German manufacturer's main residential MVHR line, often installed alongside Wolf heating systems. The model name is printed on the unit's label.
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