Mini-Pleat
Compact mini-pleat filters — maximum filtration area at minimum depth. The standard for cleanrooms.
| Class (EN 1822) | H13 |
| Efficiency | 99,95% |
| Dimensions, mm | 305×305 … 610×610 |
| Nominal airflow | 250–1000 m³/h |
HVAC ventilation | gas turbines | paint booths
A complete range of air filters for ventilation and air conditioning systems: from panel and pocket filters to EPA/HEPA absolute filters and paint booth filters. Manufactured in standard and custom sizes.
Classes G2–H14
Custom sizes
Adaltech® technology
01 — Coarse filtration
Panel / cassette filters
Asiafilter Inc. coarse filters remove dust, allergens, and microorganisms from the air, protect equipment from wear, and keep HVAC systems running efficiently. Adaltech technology increases filtration efficiency, reduces airflow resistance, and extends service life.
Panel and cassette filters provide prefiltration of particles larger than 10 µm — pollen, lint, and small insects.
Filters with dense media are recommended for long service life and high dust holding capacity.
- Filter classes G3–G4 per EN 779
- 25 and 48 mm thickness, standard and custom sizes
- First stage of multi-stage ventilation systems
| EN 779 class | Thickness, mm | Size, mm | Avg. arrestance, % | Initial pressure drop, Pa | Final pressure drop, Pa | Air velocity, m/s | Airflow, m³/h |
|---|---|---|---|---|---|---|---|
| G3 | 25 | 592×592 | 80–85 | 70 | 250 | 1,5 | 3400 |
| G4 | 25 | 287×592 | 90 | 75 | 250 | 1,5 | 1700 |
| G4 | 25 | 592×592 | 90 | 75 | 250 | 1,5 | 3400 |
| G4 | 48 | 287×592 | 90 | 85 | 250 | 1,5 | 1700 |
| G4 | 48 | 592×592 | 90 | 85 | 250 | 1,5 | 3400 |
02 — Fan-Coil
Fan-Coil filters
High-performance coarse filters designed specifically for fan coil units. They protect heat exchangers from dust and fine debris, preventing performance loss.
FrameWelded steel wire frame reinforced with one or two stiffening ribs, depending on filter size.
Filter mediaHigh-quality polyester produced with thermal bonding technology.
AttachmentThe filter media is stretched over the frame in one or two layers.
Frame standardsAvailable in 4 mm and 5 mm thickness. Made to customer dimensions.
Fan-Coil filters meet filter classes G2–G4.
03 — Flat Panel
Flat Panel filters
A flat frame with rigidly fixed filter media — synthetic polyester. A first-line-of-defense solution for ventilation and air conditioning systems.
- Filter class: G2, G3, G4
- Filter media: 100% polyester (thermally bonded)
- Temperature range: −40 °C to +70 °C
- Air humidity: up to 100% (non-condensing)
- Initial pressure drop: 10–30 Pa (depends on class and density)
- Recommended final pressure drop: 200–250 Pa
- Fire resistance: F1 / K1 per DIN 53438
- Frame: galvanized steel or steel wire
| GOST R EN 779-2014 class | Arrestance Am, % | Air load, m³/h×m² | Initial pressure drop, Pa | Final pressure drop, Pa |
|---|---|---|---|---|
| G2 | 65 ≤ Am < 80 | 2150 (1.5 m/s) | 11 | 250 |
| G3 | 80 ≤ Am < 90 | 2150 (1.5 m/s) | 26 | 250 |
04 — Grease filters
Grease filters
Professional baffle-type grease filters — the first line of defense in kitchen ventilation. The special baffle geometry creates turbulence, forcing grease particles and oil aerosols to settle on the metal plates.
- Material: AISI 304/430 stainless steel or galvanized steel
- Design: multi-layer baffle structure with high flow inertia
- Purpose: capturing grease particles, soot, and coarse cooking contaminants
- Heat resistance: suitable for grill and open-flame zones
- Maintenance: reusable — cleaned in dishwashers or with special detergents
Duct protection. Grease filters keep grease out of ventilation ducts, reducing fire load and system cleaning costs.
05 — Fine filtration
Pocket filters
Asiafilter Inc. fine filters capture fine dust, allergens, mold spores, and micro-aerosols — for spaces with strict sanitary requirements.
They consist of a rigid frame and high-efficiency pockets made of multi-layer synthetic media or specialized fiberglass.
The pocket geometry is designed to provide the maximum possible filtration area with minimum aerodynamic resistance.
- Classes G4–F9 per EN 779 / ISO 16890
- 6 or 8 pockets, 360–600 mm depth
- Protection of sensitive equipment and a healthy indoor environment
| Dimensions, mm | Pockets, pcs | EN 779 class | Grammage, g | ISO 16890 class | Filtration area, m² | Nominal airflow, m³/h | Initial pressure drop, Pa | Rec. final, Pa | Max operating t°, °C |
|---|---|---|---|---|---|---|---|---|---|
| 592×592×360 | 6 | G4 | 140 | 65% | 2,62 | 3400 | 36 | 200 | 70 |
| 592×592×500 | 6 | M5 | 90 | 65% | 3,7 | 3400 | 72 | 300 | 70 |
| 592×592×600 | 6 | M6 | 75 | 75% | 4,34 | 3400 | 129 | 250 | 70 |
| 592×592×500 | 8 | F7 | 90 | 65% | 5,1 | 3400 | 125 | 300 | 70 |
| 592×592×500 | 8 | F8 | 132 | 65% | 5 | 3400 | 113 | 300 | 70 |
| 592×592×600 | 8 | F9 | 110 | 85% | 6 | 3400 | 218 | 450 | 70 |
06 — Absolute filters
Absolute filters (EPA / HEPA)
High- and ultra-high-efficiency filters for removing the finest particles, viruses, bacteria, and aerosols. A mandatory element of supply ventilation systems in spaces with strict sterility requirements: operating rooms and cleanrooms, pharmaceutical laboratories, microelectronics, and food packaging areas.
Deep-Pleat
Pleated media separated by aluminum spacers: precise pleat spacing, high mechanical strength, and stability at high humidity and extreme temperatures.
| Class (EN 1822) | H13 |
| Depth | 292 mm |
| Dimensions, mm | 305×305 … 610×610 |
| Nominal airflow | 500–2000 m³/h |
Compact / W-type
A solution for the 2nd and 3rd filtration stages. The V-shaped structure increases filtration area within compact dimensions: high dust holding capacity, low pressure drop, and fan energy savings.
| Classes (EN 779) | M5–F9 |
| Dimensions, mm | 592×287/592×292 |
| Nominal airflow | 2100–4250 m³/h |
| Initial pressure drop | 55–95 Pa |
07 — Paint booths
Paint booth filters
A complete filtration cycle for paint booths: from supply air cleaning (preventing paint finish defects) to capturing overspray in exhaust systems. Adaltech® solutions extend equipment life and ensure compliance with environmental and fire safety standards.
Ceiling filters
Final cleaning of supply air. Synthetic polyester fibers with a progressive structure deliver dust-free laminar flow and a mirror-smooth paint finish.
Andrea labyrinth filters
Capturing paint overspray in exhaust systems through inertial particle separation. Exceptional durability and easy disposal compared to mesh filters.
Floor filters
Filtering overspray at the booth outlet. Protects ventilation ducts from sticky deposits and prevents environmental pollution.
Roll filters
Preliminary protection against outdoor dust. The first filtration level that extends the life of costly ceiling filters.
08 — Applications
Reliability of production cycles
01→
Automotive — body and parts paintingA complete paint booth filter set: M5 ceiling filters, Paint Stop, Andrea labyrinth filters. Defect-free paint finish.
02→
Machine buildingProtection of machine tools and equipment: G4–F9 panel and pocket filters.
03→
Furniture manufacturingLacquer finish quality: supply air filters and Paint Stop for spray areas.
04→
Power and oil & gasF9–H12 gas turbine filter elements, anti-corrosion painting of steel structures.
05→
Cleanrooms — pharmaceuticals and healthcareHEPA H13–H14 absolute filters for operating rooms, sterile units, and laboratories.
06→
Food industryPocket and grease filters for filling, packaging areas, and industrial kitchens.
09 — FAQ
Frequently asked questions about air filters
Answered by Asiafilter Inc. process engineers. If your question is not here, send us your system parameters and we will review them individually.
Which filter classes do you manufacture?
The full range from G2 to H14. Coarse filtration: panel and cassette G3–G4, Flat Panel G2–G4, Fan-Coil G2–G4. Fine filtration: pocket filters G4–F9 to EN 779 and ISO 16890, Compact / W-type in classes M5–F9.
The top stage is EPA/HEPA absolute filters: Mini-Pleat and Deep-Pleat in class H13 with 99.95% efficiency to EN 1822.
Can you make a non-standard size filter?
Yes, manufacturing to customer dimensions is standard practice across the range. Panel and cassette filters come in 25 and 48 mm thickness in both standard and custom sizes; the Fan-Coil filter frame is available in 4 and 5 mm.
The standard pocket filter size is 592×592 mm with 6 or 8 pockets 360–600 mm deep, but the geometry is calculated for your air handling unit.
How does a pocket filter differ from a panel filter, and which comes first?
A panel filter handles coarse filtration: it captures particles larger than 10 µm — pollen, lint, small insects — and works as the first stage of a multi-stage system, protecting more expensive filters from premature clogging.
A pocket filter handles fine filtration: it captures fine dust, allergens, mold spores and micro-aerosols. The pocket geometry provides maximum filtration area at minimum aerodynamic resistance.
When should a filter be replaced — on schedule or by readings?
When the final pressure drop is reached, not by the calendar: service life depends on the air dust load and how the unit is operated.
Reference points: for panel and cassette filters the final pressure drop is 250 Pa against 70–85 Pa initial; for Flat Panel the recommended final value is 200–250 Pa against 10–30 Pa initial; for pocket filters it ranges from 200 to 450 Pa depending on class. A differential pressure sensor on the unit is the practical way to monitor it.
Do you have filter elements for gas turbines?
Yes. For the power and oil and gas sectors we supply gas turbine (GT) filter elements in classes F9–H12, as well as solutions for anti-corrosion painting of steel structures.
What is needed for a complete paint booth filter set?
A complete paint booth filtration cycle consists of four items. On the supply side: coarse roll filters as pre-protection against outdoor dust and class M5 ceiling filters for final cleaning — they create a laminar flow and prevent paint finish defects.
On the exhaust side: Paint Stop floor filters for paint mist and Andrea labyrinth cardboard filters to capture paint overspray.
Are your HEPA filters suitable for operating theaters and cleanrooms?
Yes, that is their primary application — along with pharmaceutical laboratories, microelectronics and packing areas in food production.
Mini-Pleat class H13 (99.95% efficiency) is a compact design with fine pleats, sizes from 305×305 to 610×610 mm, nominal airflow 250–1000 m³/h. Deep-Pleat H13 with aluminum separators and 292 mm depth is rated for 500–2000 m³/h and stays stable at high humidity.
Are grease filters disposable or washable?
Reusable. Labyrinth grease filters are made of AISI 304/430 stainless steel or galvanized steel and are cleaned in dishwashers or with special agents.
Their job is to keep grease and soot out of the ductwork: this reduces the fire load of kitchen ventilation and the cost of duct cleaning.
We'll select filters for your ventilation system
Send us the dimensions of your installed filters or your ventilation system design — Asiafilter Inc. engineers will prepare a specification and cost estimate, including custom sizes.