SYNRUI FFU Definition

An cleanroom fan filter unit is a freestanding device that provides a continuous supply of fresh air. It consists of three main components: a high-efficiency particulate air (HEPA/ULPA) filter, a built-in fan (usually a brushless motor), and a uniform-airflow housing.
Its function is to draw in, filter, and evenly deliver air within the unit, creating a stable vertical or horizontal laminar flow inside the cleanroom to achieve ISO 3–ISO 8 cleanliness levels.
FFU Application Areas
Semiconductor cleanrooms; pharmaceutical manufacturing; electronics and optoelectronics industries; LCD/LED display panel factories; laboratories and research institutions; precision manufacturing and testing centers; medical device production.


Product Specifications
|
Housing size |
Filter size |
Filter Efficiency |
Motor Efficiency |
|
1175mmx1175mmx300mm |
1170mm x1170mmx70 mm |
HEPA/ULPA |
88% |
|
575mmx1175mmx275mm |
570mm x1170mm x70 mm |
HEPA/ULPA |
88% |
Product Characteristics
High-efficiency and energy-saving EC/DC motors
SYNRUI's cleanroom fan filter units made in china use EC/DC (brushless DC) motors, which offer the following advantages:
Reduce energy consumption by 20–35%compared with traditional AC motors
Continuous operation for ≥60,000 hours
0–100% stepless speed control
Maintain constant airflow even as filter resistance increases
01
High airflow + high static pressure
SYNRUI provides standard FFU sizes: 2×2, 2×4, and 4×4.
High-power motors ensure stable airflow under high-resistance conditions
High-static-pressure china cleanroom fan filter units ensure that cleanroom airflow and cleanliness levels remain stable over time, even as filter resistance increases
02
High-efficiency HEPA/ULPA filters
Available filter options include:
H13 (99.99% @ 0.3 μm)
H14(99.995% @ 0.3 μm)
U15(99.9995% @ 0.12 μm)
03
Ultra-low-noise design (≤48–55 dB(A))
Optional adjustable-airflow models
Optimized internal structure to reduce housing deformation or cracking
EC/DC motor provides quiet and stable operation
04
Durable, corrosion-resistant housing
Available materials:Zinc-plated aluminum;Stainless steel;Corrosion-resistant surface-treated options.
Suitable for long-term operation in high-humidity or demanding cleanroom environments.
05
Typical application cases
Pharmaceutical Industry Case Study
Application Requirements:
Pharmaceutical manufacturing processes have extremely stringent requirements for air cleanliness, microbial control, and particulate matter, typically requiring ISO 5–ISO 7 cleanliness levels and 24/7 continuous operation.
Solution:
H14/ULPA filters ensure that particulate levels in sterile areas remain consistently below required thresholds.
High-static-pressure design effectively overcomes end-duct resistance.
Low-noise performance makes the system suitable for densely staffed filling lines.
Actual Application Results:
After SYNRUI's customized cleanroom fan filter units were implemented in an injectable aseptic filling workshop, the particle count in the clean area decreased by 42% compared with the original system.
Cleanroom airflow stability improved, and the product qualification rate increased by approximately 18%.
Filter efficiency degradation was less than 5% after 18 months of continuous operation.
Semiconductor Industry Case Study
Application Requirements:
Semiconductor processing requires extremely high air cleanliness, often maintaining ISO 3–ISO 5 levels year-round. Even a single particle can lead to wafer defects.
Solution:
Ultra-high-efficiency ULPA filters with MPPS filtration efficiency ≥ 99.9995%.
High-airflow design ensures stable laminar flow.
EC (brushless DC) motors reduce energy consumption by 30–50%.
Real-World Application Results:
Deployment of 2,000 cleanroom fan filter units price in a wafer fab enabled certain areas to reach ISO Class 3.
Wafer yield increased by 7.6%.
FFU power consumption decreased from 180 W (traditional AC systems) to 110 W, saving approximately $170,000in annual electricity costs.
Biosafety Laboratory Case Study
Application Requirements:
Biosafety laboratories must strictly control microorganism spread, requiring directional airflow and high-efficiency terminal filtration.
Solution:
ULPA or H14-grade filters for terminal exhaust.
Support for negative-pressure environments to ensure airtight containment.
Modular installation structure facilitates laboratory upgrades and retrofitting.
Practical Application Results:
A national BSL-3 laboratory using 180 cleanroom fan filter units suppliers achieved zero microbial detection at the exhaust terminal during monitoring.
Due to the modular structure, the renovation cycle was shortened by 35%.
Precision Manufacturing Industry Case Study
Application Requirements:
Critical processes such as assembly, coating, and testing require stable laminar flow to prevent scratches or defects caused by static electricity or microparticles.
Solution:
Local clean booths using discount cleanroom fan filter units to establish ISO 5 laminar flow zones.
Anti-static design ensures enclosure grounding resistance is <0.1 Ω.
Airflow stability maintained within ±5%.
Practical Application Results:
After installing 60 cleanroom fan filter units to build an assembly clean booth:
Scratch defect rate decreased by 28%.
Lens cleaning frequency decreased by 40%.
Labor and rework costs were significantly reduced.
Food and Cosmetics Industry Case Study
Application Requirements
Airborne microorganism and particulate levels must be kept low to prevent secondary contamination of products.
Solution:
Use H13/H14 HEPA filters to ensure microbial counts meet aseptic-area standards.
Maintain a stable airflow velocity of approximately 0.45 m/s to enhance local positive pressure.
Actual Application Results:
After using cleanroom fan filter units manufacturers in a cosmetics factory, airborne bacteria levels decreased by 67%, and the product return rate decreased by 21%.
Why choose SYNRUI as wholesale supplier?
High Batch Consistency
Each cleanroom fan filter units undergoes airflow, static pressure, noise, and air leakage tests before leaving the factory, ensuring consistent performance across batches and suitability for large-scale engineering projects.
Factory Direct Supply, More Competitive Pricing
By eliminating middlemen, wholesale procurement costs are significantly reduced.
Strong Delivery Capabilities
With our own production lines and ample inventory, lead times are shortened.
OEM/ODM Customization Supported
Size, voltage, filter grade, motor type, and housing material can all be customized to meet specific project requirements.
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