Compatible filter set
G4/G4 filter set for Cairox CHR 325
2 filters · 245 × 510 × 5 mm · frameless frame
The G4/G4 set follows the factory configuration of the Cairox CHR 325: one ISO Coarse 75% filter (formerly G4) on the supply side and one on the extract side. The standard choice for a home without particular constraints.
€9.75€10.75incl. 21% VAT
Out of stock, restocking in progress
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- Compatible with Cairox CHR 325, matching dimensions and filter class
- Delivery in Belgium
- Secure payment, Bancontact, cards
- Made in the European Union
Compatible product. Not manufactured or sold by the brand named. Brand and model names are used solely to indicate compatibility.
What the set contains
Each set delivers every filter of the unit, ready to fit.
| Class | Position | Dimensions | Frame |
|---|---|---|---|
| 2 × ISO Coarse 75 % · G4 | Extract air, Supply air (fresh) | 245 × 510 × 5 mm | frameless |
Why this set
- ISO Coarse / ISO Coarse configuration
- Standard filtration
- Same media in both positions
G4 or F7?
| ISO Coarse 75% (G4) | ISO ePM1 65% (F7) | |
|---|---|---|
| Stops | Dust, insects, lint | Pollen, fine particles, soot |
| Position | Extract and supply air | Supply air, intake side |
| For whom | The unit's standard configuration | Allergies, city, busy road |
| Lifetime | 6 months | 6 months, watch it more closely |
Specifications
- Set
- G4/G4 · KIT-245x510x5-PLAT-G4G4
- Unit
- Cairox CHR 325
- Number of filters
- 2
- Filter dimensions
- 245 × 510 × 5 mm
- Thickness
- 5 mm
- Frame
- frameless
- Available classes
- 2 × ISO Coarse 75% (G4)
- VMCD reference
- KIT-245x510x5-PLAT-G4G4
- Type
- Compatible filter, not an original part
- Made in
- European Union
- Recommended replacement
- Every 6 months, check every 3 months
When and how to replace
Every six months in most homes, more often near a road, during building work or with pets. A grey, bulging or smelly filter needs replacing without waiting for the date.
- 01
Switch off the power
Turn the unit off or cut the breaker before opening the hatch.
- 02
Open the filter hatch
Remove the old filters and note their direction: an arrow or label shows the air inlet side.
- 03
Slide in the new filters
If the set mixes two classes, the fine filter (ISO ePM1) goes on the supply side. With two identical filters there is no order to follow. The frame must sit flat, without play.
- 04
Reset the indicator
Close up, switch back on and reset the filter reminder on the controller, if there is one.
The other sets for this unit
Same dimensions, different filter class.
This set also fits
These units use the same filter shape.
Frequently asked questions
Is this G4/G4 set an original Cairox part?
No. It is a compatible set, made to the dimensions of the CHR 325 filter (245 × 510 × 5 mm) and to the stated filter class, by a European manufacturer of ventilation filters.
When will this set be dispatched?
If the set is in stock, within two working days of payment, by parcel, anywhere in Belgium. If it is shown as unavailable, no lead time is promised: leave your email and we will let you know as soon as it is back.
How do I fit the filters in the CHR 325?
Both filters in this set are identical (ISO Coarse 75%, formerly G4): there is no supply or extract position to tell apart. An arrow or label on the frame shows the air direction. The frame must sit flat, without play. Reset the filter indicator after fitting.
Would you rather we did it?
In Brussels, Brabant and Hainaut we replace the filters during the unit's service visit and hand you a written report.