Applicable air handling units: SIBER DF OPTIMA 1 / SIBER DF OPTIMA 2 filters

Quality level: the same quality as an original filter.

Measurements (mm):

• Supply air filter: 139x175x48 (Panel Filter), class G4 (Coarse 75%), F7 (ePM1 70%), AC (activated carbon) (ePM2.5 60%).


• Extract air filter: 139x175x48 (Panel Filter), class G4 (Coarse 75%)

Filtering efficiency F7 filter:

• Coarse particles: >99% (dust, pollens)


• PM10 particles: >93% (mold spores, pet dander)


• PM2.5 particles: >80% (combustion particles)


• PM1 particles: >70% (smog particles, virus cariers)

Filtering efficiency G4 filter:

• Coarse particles: >75% (dust, pollens)


• PM10 particles: <50% (mold spores, pet dander)


• PM2.5 particles: –


• PM1 particles: –

Filtering efficiency AC filter:

• Coarse particles: >99% (dust, pollens)


• PM10 particles: >80% (mold spores, pet dander)


• PM2.5 particles: >60% (combustion particles)


• PM1 particles: <50% (smog particles, virus cariers)


• Volatile particles (smell), NOx: +.

Filtering efficiency F9 filter:

• Coarse particles: >99% (dust, pollens)


• PM10 particles: >99% (mold spores, pet dander)


• PM2.5 particles: >90% (combustion particles)


• PM1 particles: >85% (smog particles, virus cariers)

Filter construction (F7/F9):

• Type: MPL (deep pleat). Extra-large filtering surface.


• Filtering material: high resistance synthetic material.


• Frame: synthetic (flexible, wide surface, moisture-resistant).


• Filtering material resistant to the growth of microorganisms: complies with VDI 6022.


• Efficiency is tested in an independent laboratory in Germany.

Filter construction (G4):

• Type: Z-line.


• Filtering material: high resistance synthetic material.


• Frame: synthetic (flexible, wide surface, moisture-resistant).


• Filtering material resistant to the growth of microorganisms: complies with VDI 6022.


• Efficiency is tested in an independent laboratory in Germany.

Advantages: To the most other analog filters:

• A-frame is made of synthetic material. Operates even at a relative humidity of 100%. Suitable for humid European climate.


• Firmly glued throughout all frame areas. Filter construction is airtight and there are no leakages of dust and other particles through connections.


• Tested according to the new EN ISO 16890 standard. Previous EN 779 expired on 01/07/2018. By not providing data according to the new standard filter supplier misleads the customer.


• Filters are manufactured from high-quality synthetic filtering media. Such filtering material is much stronger and damage-resistant. The holes will not appear on the filter, which may let through the dust and other dangerous particles.


• High filtering efficiency: ePM1 70% (F7) class filter. Even the main original F7 filters have a filtering efficiency of 1µm dangerous particles up to 60%. Most analog filters are manufactured from cheap material, which filters less than 50% of these particles and therefore corresponds to the lower ePM2.5 class.

Manufacturer codes:

DFFG4 – FILTER G4 CORSE 65% (2 filtros incluidos)
DFFF7 – FILTER F7 EPM 1 55%
DFFG4F7 – COMBINED FILTER G4 + F7 CORSE 65% – EPM 1 55%
DFFCA – CARBON FILTER
DFFF9 – FILTER F9 EPM 1 80%
DFFG4F9 – COMBINED FILTER G4 + F9 CORSE 65% – EPM 1 80%
DFFCAG4- CARBON FILTER + G4

Expected service time: 5-7 months (depends on ambient air contamination). Activated carbon filter serves ~ 3 months. Single-use only.

Packing: Filters are packed in a plastic film for long-term storage in a dry environment.

Warranty: 2-year warranty if stored in proper conditions.

Manufactured in EU.

Discounts and VAT:

• VAT rates:


• EU residents depend on country’s VAT rate.


• Norway residents: 25%


• EU Companies: 0% (except LTU)


• Other Non-EU residents and Companies: 0%.

• A higher discount is being applied by purchasing more than 10 filter sets. Please contact us directly.