ASHRAE Salt-Resistant Aluminum Separator Box Filters

  • Filtering range: 1㎛~3㎛ of tiny particles can be effectively filtered.
  • Filtering efficiency: Up to 45~95%.
  • Long life span: Replacement frequency of 6-8 months, saving maintenance costs. (Replacement time depends on environmental conditions)
  • Application Scenario: Suitable for coastal area factories, buildings, nuclear power plants, sea salt particles with particle size of 0.5~30um.

In coastal areas and high salt environments, conventional aluminum barrier filters are susceptible to corrosion and damage, which requires a special salt-resistant design. The Salt Resistant Aluminum Separator Filter is designed to solve this problem.
Salt-resistant aluminum separator filters provide a reliable and cost-effective solution for facilities in harsh environments. This not only increases equipment reliability, but also reduces long-term maintenance costs.

Salt-Resistant Aluminum Separator Box Filters

The filter material is a double-density hydrophobic ultra fine glassfiber with a corrugated aluminum spacer to withstand high humidity environments and control the air into a laminar flow condition. The filter material has good water repellency, and the sea salt particles captured will not be dispersed by moisture. The filter has high salt trapping efficiency. The frame materials can be wood, galvanized steel, aluminum box or flange type. They are designed for applications in coastal area factories and nuclear power plants, etc.


Frame: Galvanized, Aluminum, Wooden Frame (with 3 types of options for Single Flange, Double Flange, Box type)
Media: Wet-laid glass fiber
● M6 (EN779), 60-80% / MERV 11-12 (ASHRAE 52.2)
● F7 (EN 779), 80-90% / MERV 13 (ASHRAE 52.2)
● F8 (EN 779), 90-95% / MERV 14 (ASHRAE 52.2)
Separator: Aluminum foil
Adhesive: Polyurethane (PU)
Fire retardant grade: UL900
Max. Temperature: ≦80C
Max. Humidity: ≦100%RH
Rec. Final Pressure Drop: ≦350 Pa


✔ Good water repellency
✔ Air control for laminar flow conditions
✔ Special filter design against salt damage
✔ Capture of sea salt particles not to fly apart
✔ Wavy aluminum partitions to withstand high humidity
✔ Double-density hydrophobic ultra fine glass fiber
✔ Control airflow under high humidity
✔ Hammed edges eliminate possible pleat damage
✔ Extend life span with low initial resistance


Available for being applied in pharmaceutical industry, food processing industry, hospitals, and aerospace. Coastal area factories, buildings, nuclear power plants.
Diameter of sea salt particles 0.5~30um

  1. Enhanced Corrosion Resistance: Salt-resistant aluminum bulkhead filters use special materials and coatings that resist salt-induced corrosion. This coating often includes salt-resistant paints or special alloys that enhance the durability of the filter in harsh environments.
  2. Long-Term Stability: This filter is designed for long term use and maintains its structural integrity and functionality even in constant salt spray environments, reducing the frequency of maintenance and replacement.
  3. Optimized Filtration Efficiency: In addition to corrosion resistance, these filters are designed to provide efficient air filtration. This means they effectively capture airborne particles while reducing wind resistance and improving energy efficiency.
  4. Easy To Clean and Maintain: Due to its special surface treatment, the Salt Resistant Aluminum Separator Filter is easier to clean and maintain. This is especially important in environments that are constantly exposed to sea salt and other corrosive substances.
  5. Environmentally Adaptability: These filters are suitable for being applied in a wide range of environments, especially for those areas with high salt, high humidity or other corrosive climatic conditions. They are commonly used in coastal areas for buildings, ships, industrial facilities and other sites that require special protection.
Product Information
Nominal Size
WxHxD (in.)
Actual Size
WxHxD (mm)
Media Area (m²)
Standard Capacity
Media Area (m²)
High Capacity
Filter Rating
Air Flow
Standard Capacity
CFM         CMH
Air Flow
High Capacity
CFM         CMH
Initial Resistance
Standard Capacity
In W.G.    Pa
Initial Resistance
High Capacity
In W.G.    Pa
Rec. Final P.D.
12×24×12305x610x2905.857.69M610001699125021240.401000.58145≤ 350
(1.5 In W.G.)

◆ Face Velocity:
150D = > Standard velocity: 1.2 m/s   High velocity: 1.5 m/s
290D = > Standard velocity: 2.5 m/s   High velocity: 3.2 m/s
◆ Other sizes are available upon requests.