• Preferred materials

  Sturdy and practical, long service life

• Beautiful and solid

  The outer frame is made of aluminum profile, non-woven chemical fiber cloth, folded and shaped, supported by metal mesh, with plastic corners or angle aluminum.

  Folding and forming, supported by metal mesh, with plastic corners or aluminum corners, compact structure, commonly used in pre-filtration of ventilation systems.

• Strict quality control

  Layers of quality control, refusing to be shoddy and long service life.

• Support customization

  Special sizes and specifications can be customized according to customer requirements.

  Pre-filtration of air-conditioning system or centralized ventilation and air-conditioning system of clean room. Coarse dust filtration, air filtration system pre-filtration. Clean room air inlet and return air filtration.

1. Do folding primary filters work in high humidity environments?

Folding primary filters are generally effective in high humidity environments, but their performance can depend on the materials used in their construction. Some folding filters, especially those made with synthetic fibers or polyester, are designed to perform well even in humid conditions. However, filters made with materials like fiberglass may degrade over time in extremely humid environments, reducing their efficiency. It's important to choose a filter suited for high moisture areas to ensure optimal performance.

2. How do I clean a folding primary filter?

Cleaning a folding primary filter typically involves the following steps:

• Turn off the HVAC system to ensure safety.

• Remove the filter carefully from the system.

• Use compressed air to remove loose dust and debris.

• Wash the filter with water if it is washable, ensuring it dries completely before reinstalling.

Always refer to the manufacturer's instructions for the specific cleaning requirements based on the material of the filter to avoid damage.

3. What are the dimensions of a standard folding primary filter?

The dimensions of a standard folding primary filter can vary, but common sizes include:

• 20" x 20"

• 24" x 24"

• 16" x 25"

It's important to measure the compartment or air handling unit where the filter will be installed to ensure a proper fit.

4. How to choose a folding primary filter for my ventilation system?

When selecting a folding primary filter for your ventilation system, consider factors such as the size of the system, the type of contaminants in the environment, and the airflow requirements. You should also consider the MERV rating (Minimum Efficiency Reporting Value) to assess its effectiveness in filtering particles of specific sizes. The size of the filter is also crucial to ensure a good fit within your system. It's best to consult the manufacturer's specifications to choose the right filter for your needs.

5. How does a folding primary filter differ from a pleated filter?

A folding primary filter and a pleated filter both serve similar functions in air filtration but differ in design. A folding primary filter uses a series of folds to increase surface area, improving its dust-holding capacity and airflow. Pleated filters, on the other hand, have a pleated design, offering a similar increase in surface area but typically with a different structure. While both filters increase surface area for better performance, the folding design generally provides a more compact filter compared to pleated ones.

6. How to calculate the efficiency of a folding primary filter?

The efficiency of a folding primary filter is typically measured by its ability to capture particles of various sizes. To calculate its efficiency, one must refer to the filter’s MERV rating, which indicates its ability to filter particles in the 0.3 to 10-micron range. Higher MERV ratings correspond to better efficiency, capturing smaller particles. A simple calculation can also be made by assessing the ratio of particles captured versus particles passing through the filter.

7. What are the benefits of using a folding primary filter?

Using a folding primary filter offers several advantages:

• Increased dust-holding capacity due to its expanded surface area.

• Improved airflow, preventing strain on the system.

• Cost-effective by protecting more sensitive filters and extending their lifespan.

These benefits make folding primary filters an ideal choice for environments requiring efficient and reliable air filtration.

8. Can a folding primary filter be used in cleanrooms?

Yes, folding primary filters can be used in cleanrooms as part of a multi-stage filtration system. Their role is to capture larger particles, preventing them from clogging more sensitive secondary filters. While they are not designed to filter fine particles, they are an important component in maintaining air quality in cleanrooms by removing larger contaminants before air enters the more critical filtration stages.

9. What types of contaminants do folding primary filters capture?

Folding primary filters are effective at capturing larger airborne contaminants, including:

• Dust

• Hair and fibers

• Pollen and larger allergens

These filters serve as the first line of defense in preventing these larger particles from reaching more sensitive filters in an air filtration system.

10. Can folding primary filters be used in HVAC systems?

Yes, folding primary filters are commonly used in HVAC systems. They serve as the first stage of filtration, protecting secondary filters from larger particles such as dust and debris. By preventing larger contaminants from reaching more sensitive filters, folding primary filters help extend the life of the entire air filtration system while ensuring optimal airflow.

11. Can a folding primary filter be cleaned?

Yes, folding primary filters can often be cleaned depending on their material. Filters made of synthetic fibers or polyester can typically be washed and reused. However, filters made from fiberglass or similar materials may not be washable and need to be replaced once they are saturated with contaminants. It’s important to follow the manufacturer’s guidelines for cleaning to ensure the filter’s longevity and efficiency.

12. Do folding primary filters help with indoor air quality?

Yes, folding primary filters contribute to better indoor air quality by capturing larger particles such as dust, pollen, and allergens. By removing these contaminants, they reduce the presence of particles that can affect respiratory health and overall air quality. Additionally, by protecting secondary filters, they help maintain the efficiency of the entire air filtration system, ensuring cleaner air in the indoor environment.

13. Can folding primary filters be used in healthcare settings?

Folding primary filters can be used in healthcare settings, but they are typically part of a multi-stage filtration system. They capture larger particles before the air passes through more specialized filters that handle finer contaminants. In healthcare environments, where air quality is critical, these filters help maintain cleaner air by protecting more sensitive filters from heavy contaminants.

14. What is a folding primary filter?

A folding primary filter is an air filter that uses a unique folding design to increase its surface area. This design helps capture larger airborne particles before air moves through more sensitive secondary filters. The filter is commonly used in HVAC systems, industrial environments, and cleanrooms, where it helps ensure clean, high-quality air by preventing contaminants from reaching more delicate filtration systems.

15. How does the folding design improve filtration efficiency?

The folding design improves filtration efficiency by increasing the surface area of the filter without increasing its size. With more surface area, the filter can capture a greater amount of dust and debris while still allowing for optimal airflow. This ensures that larger particles are filtered out before air passes through secondary filters, protecting those filters and improving the overall performance of the air filtration system.

16. What is the dust-holding capacity of a folding primary filter?

The dust-holding capacity of a folding primary filter depends on its size and design. Due to its increased surface area from the folding structure, it can hold more dust and debris compared to traditional flat filters. The capacity varies based on the filter’s MERV rating and material, but it is generally much higher than that of non-folded filters. This allows for extended use before the filter needs to be replaced or cleaned.