YIDINGAIR FILTRATION
Product overview
What it is and where it fits.
The AR603 fan filter unit combines a fan, a HEPA or ULPA filter and a housing in one ceiling module. Installed in a cleanroom ceiling grid, each unit draws air from the plenum and delivers filtered air directly into the room, for both mixed-flow and unidirectional (laminar) flow cleanrooms.
Because every unit is self-contained, FFUs make it easy to create local clean zones, give different areas different cleanliness levels, and change the cleanroom layout later. Applications include microelectronics, biotechnology, food and beverage production, hospitals and pharmaceutical facilities.
- Unit type
- Fan filter unit (FFU) for ceiling grids
- Housing sizes
- 570 × 570 × 250 mm and 570 × 1170 × 250 mm
- Filter sizes
- 570 × 570 and 570 × 1170 mm, 50 or 65 mm deep
- Rated airflow (catalogue)
- 400 – 900 m³/h
- Filter grades
- HEPA 99.97% / 99.99% at 0.3 µm; ULPA 99.999995% at 0.1–0.2 µm
Typical applications
- Unidirectional-flow and mixed-flow cleanroom ceilings
- Local clean zones and clean booths
- Semiconductor, electronics and optical assembly
- Biotechnology, pharmaceutical and hospital clean areas
- Food and beverage production
Construction & performance
Integrated cleanroom airflow
A fan filter unit for mixed-flow and unidirectional-flow cleanrooms. Applications include microelectronics, biotechnology, food and beverage production, hospitals and pharmaceutical facilities.
Flexible installation
Units can provide local clean zones, support different cleanliness requirements in the same area and allow changes to the cleanroom layout.
Filter options
HEPA and ULPA configurations. Housing sizes, filter sizes, airflow and initial pressure drop are listed below; motor power, noise and electrical data are provided for your configuration on request.
Selection guide
How to choose.
Count the units from the air change rate
The number of FFUs follows from the cleanroom class, room volume and required air changes or downflow velocity. Send us the room size and target ISO class and we help size the ceiling coverage.
Choose the module size
2×2 ft modules (570×570 mm) suit smaller rooms and partial coverage; 2×4 ft modules (570×1170 mm) cover more ceiling per unit.
HEPA or ULPA
HEPA filters cover most cleanroom classes; ULPA is chosen for the most stringent zones. Filter grade and test documentation are confirmed with your order.
Technical data
Specifications & dimensions.
Rated airflow in m³/h, pressure drop in Pa, actual dimensions in mm, nominal sizes in inches. Swipe tables sideways on small screens.
| Particle size | Efficiency |
|---|---|
| 0.3 µm | 95% |
| 99.97% | |
| 99.99% | |
| 99.999% | |
| 0.1–0.2 µm | ≥ 99.999% |
| Test standard: EN 1822 | |
| Efficiency (%) | Housing size (mm) | Filter size (mm) | Rated airflow (m³/h) | Initial pressure drop (Pa) | Particle size (µm) |
|---|---|---|---|---|---|
| 99.97 / 99.99 | 570 × 570 × 250 | 570 × 570 × 50 | 400 | 87 | 0.3 |
| 570 × 570 × 65 | 450 | 99 | |||
| 570 × 1170 × 250 | 570 × 1170 × 50 | 800 | 82 | ||
| 570 × 1170 × 65 | 900 | 93 | |||
| 99.999995 | 570 × 570 × 250 | 570 × 570 × 50 | 400 | 91 | 0.1–0.2 |
| 570 × 570 × 65 | 450 | 103 | |||
| 570 × 1170 × 250 | 570 × 1170 × 50 | 800 | 86 | ||
| 570 × 1170 × 65 | 900 | 97 |
Catalogue values at rated airflow. Test data for your exact configuration is available on request.
Original Yiding catalogue (Chinese) ↗FAQ
Common questions.
What is a fan filter unit?+
An FFU is a self-contained ceiling module with its own fan and a HEPA or ULPA filter. It pulls air from the ceiling plenum and supplies filtered air to the room below, without a central ducted supply to each filter.
Which cleanrooms use FFUs?+
FFUs are used in unidirectional-flow cleanrooms, where much or all of the ceiling is covered with units, and in mixed-flow rooms and clean booths with partial coverage. Coverage and airflow are set by the required ISO 14644-1 class.
Can the filter be replaced?+
Yes. The filter is a separate element; replacement filters in the listed sizes and grades are available.
