Panel Filter

Your Premier Panel Filter Choice Serving Your Application

Filson panel filter, a panel type air filter, is also called air panel filter. It is an ideal choice for dust removal in all applications. By using the filter, not only the rest components involving in the system are protected, but also the final filter’s life is extended.

Filson is committed to providing one-stop solution for all your panel filter projects and air filtration requirements. As a panel filter manufacturer, we have unique advantages to customize a full range of panel filters to meet your different application needs.

View the rest article, learn more about this versatile device and find the best performance panel filter with a competitive price at Filson. No matter for a standard type or custom type, our product will make you satisfied.

Filson Panel Filter

Pleated Panel Filter
Filson pleated panel filter is the most frequently-used type of panel filter. It adopts a special pleated design to increase the overall filtration area. With larger dust holding capacity, this kind of panel filter is available to be applied to all HVAC systems.
Flat Panel Filter
Filson flat panel filter, also known as flat panel air filter, is a common and basic type of panel filter. Though it has a smaller surface area comparing to pleated panel filter, it still performs well in most situations and is more cost-effective.
Metal Panel Filters
Filson metal panel filters refers to mesh air filters or metal mesh air filters. It is a versatile device used to collect and remove dust in the air, providing a healthy and clear environment for workplace.
HVAC Panel Filter
Filson provides HVAC panel filter with highest quality and best performance. The device is washable and reusable to reduce your purchasing costs to some extent. And it is custom designed to fit exactly into your existing air filtration system.
F7 Panel Filter
Filson F7 panel filter is a kind of medium efficiency air filter with filtration efficiency ranging from 75% to 85%. It is mainly used in the central air conditioning ventilation system for intermediate filtration, pharmaceutical, hospital, electronics, food and other industrial purification.
G4 Panel Filter
Generally, G4 is used to describe the filtration efficiency of the filter which is defined at about 35%. Filson G4 panel filter is widely applied to filter dusts and particles larger than 5 micron in the air. Besides, we also offer G3 panel filter to customer specifications.
HEPA Panel Filter
Filson HEPA panel filter refers to high efficiency particulate air filter. Experiencing a series of strict performance test and quality check, HEPA panel filter is proved to remove 99.99% of dust and any airborne particles with a size of 0.5 µm.
Activated Carbon Panel Filter
Filson activated carbon panel filter is also known as activated carbon air filter or carbon panel filter. It has a different working method from common panel filter, mainly removing volatile organic compounds, odors and other gaseous pollutants from the air.
Disposable Panel Filter
Filson disposable panel filter is a prefilter for air conditioning system to control air and remove dust. It is designed with a 100% moisture resistance frame and metal wire backup which makes the filter media fixed in the filter.
Replacement Panel Filter
If you are looking for a suitable replacement panel filter for your existing air conditioning system, then you are in the right place. Filson, as the professional panel filter manufacturer, is here to provide the amazing replacement for your old one.

Why Choose Filson Panel Filter

Filson, as a customer-oriented panel filter supplier, always pays more attention to the requirements of customers. We will take care every tiny details, from filter design to final packaging, during the communication and cooperation with you.

Since the establishment in 2001, Filson has been exploring and innovating in filtration field for more than 20 years. We are regarded as an expert with rich experience in designing and manufacturing panel filters, and have gained good reputation through exporting quality products to the world.

  • Stable raw material supplier for quality panel filter manufacturing
  • Rich experience in all kinds of panel filter designing
  • Professional core engineering team, providing expert advice
  • Fast and safe delivery ensured to meet customer requirements
  • Custom service and one-stop solution to fit various application needs

Filson panel filter drawing

Filson: Your Reliable Panel Filter Supplier in China

Filson is one of the best panel filter manufacturer in China, supplying all kinds of products with outstanding performance. Our complete panel filter range includes flat panel filter, pleated panel filter, metal panel filter, carbon panel filter, etc.

air filtration steps using different type panel filters

Simply, Filson panel filter is composed of external frame, filter media and welded wire media backing. Among which the frame is made of cardboard or metal, the filter media could be synthetic, polyester or metal and the backing wire is chosen from stainless steel, galvanized steel or other materials.


All these materials used to construct Filson panel filter are allowed to be selected according to the specific requirements and actual application needs. As for the function of each part, you can learn from the following description:

1. Panel filter frame

The diagonal design of the external frame provides a large filtration area and enables the internal filter material to adhere tightly. The filter is bonded to the external frame with a special adhesive all around to prevent air leakage or breakage caused by wind resistance pressure.

2. Filter media

The filter media is packed in a pleated or non-pleated form into a high strength cardboard with an increased windward area. It acts as the main and vital component of the filter, capturing and removing the dust and impurities in the air.

3. Wire media packing

Supported by the metal wire mesh, the filter media is stably fixed in the frame, providing the better performance during the operation. At the mean time, it prevents the filter from being deformed and damaged by high airflow or harsh conditions.

benefits of using Filson panel filter

It’s obvious that Filson panel filter is used to purify air and remove dust in many applications to provide clean working environment and guarantee human health. However, from another point of view, the device protects the components in the system and prolongs the life of the final filter.

Usually, Filson panel filter is mounted in HVAC system in all applications. You can easily the product in office buildings, schools & universities, healthcare facilities, pharmaceutical plants, industrial workplaces, hospitality labs and other places where a pre-filtration is needed.

HEPA panel filter supplier

Filson panel filter is much popular in a pleated form which is called a pleated panel filter. The filter media is folded into the frame. The unique design provides a larger filtration area to capture more dust and offer larger dust holding capacity.

When Filson panel filter is working, the dust particles in the incoming air are effectively blocked by the filter material between the pleats. Clean air flows out evenly from the other side, so the airflow through the filter is gentle and uniform.

high quality panel filter(上半截标题截掉)

Depending on the filter material, the particle size that Filson panel filter blocks varies from 0.5 micron to 50 micron, and the filtration efficiency also varies. Basically, the filter can reach a high filtration efficiency up to 90% in the case of dust size ranging from 3 micron to 10 micron.

Filson will never let you down when it comes to filtering product engineering. All our products undergo a rigorous panel filter test before leaving the factory to ensure the best quality and safe operation of your filter.


If you are looking for the panel filters for your application, do not hesitate to contact Filson. Our experienced specialists are waiting for you and we are looking forward to building cooperative relationship with you.

say byebye to harmful gases

Filson Panel Filter Function:

  • Increase both dust holding capacity and filtration surface
  • Improve the air quality benefitting to human health
  • Filter and remove dust contained in the air
  • Act as a prefilter for the following processes
  • Protect the sensitive and expensive devices downstream
  • Extend the life of valuable final filter

product features of panel filter

Filson Panel Filter Feature:

  • Available for pleated design leading to larger filtration area
  • Wide range of filtration accuracy ranging from 0.5 to 50 micron
  • Quality manufacturing material for excellent filtration efficiency
  • Enhanced air quality due to the outstanding performance
  • Easy to use & clean and able to be replaced
  • Ideal solution for dust removal and air purification
  • Cost-effective choice for overall savings
  • Extended media area, resulting in a low pressure drop

Filson Panel Filter Specification:

  • Raw material: synthetic or cotton/polyester blend, stainless steel, aluminium, copper
  • Frame material: aluminium, stainless steel, galvanized steel
  • Micron rating: 0.5 – 50 micron
  • Operating temperature: 82ºC for continuous and 93ºC for intermittent
  • Airflow capacity: 240 – 2520 CFM
  • Filtration efficiency: up to 90% ( for particles from 3 to 10 micron )
  • Filter size ( W x H ): 24’’ x 24’’
  • Depth: 1 inch, 2 inch, 4 inch

Note: Filson supplies a custom service, send your specifications for an instant quote.

application site display

Filson Panel Filter Application:

  • Commercial buildings
  • Office buildings
  • Schools and universities
  • Healthcare facilities
  • Pharmaceutical plants
  • Clean rooms
  • Food industry
  • Electronic industry
  • Industrial workplace
  • HVAC systems
  • Hospital labs

Panel Filter: The Ultimate FAQ Guide

Before you import panel filters from China, read this guide.

It answers all questions you have about panel filters.

This includes definition, working principle, components, filter rating, quality standards, and cost, among other aspects.

Let’s dive right in:

What is a Panel Filter?

Panel filter

Panel filters are simple air filters that remove dust and particulate contaminants from the air.

They employ a negative pressure system to clean particles, which range from 1 micron to 50 microns.

Also, they protect the mechanical parts from the damages resulting from particle abrasion and also prevent the engine oil from getting contaminated with particles.

When used in housing vents, they help extend the service life and internal air quality of other units in commercial and residential buildings or factories.

What Kind of Impurities do Panel Filters Remove?

Panel filters remove solid particles that range from 1 micron to 50 microns.

They include;

  • Pollen
  • Mold spores
  • Mites
  • Carpet and textile fibers
  • Fabric protectors
  • Lead dust
  • Milled flour
  • Auto exhaust particles
  • Humidifier dust
  • Legionella,
  • Nebulizer droplets
  • Spray paint dust,
  • Soil dust
  • Pet fur among others
How does a Panel Filter Work?

The fan suctions the air into the filter media through negative pressure.

When the air comes into contact with the surfaces of the filter medium, it applies different mechanisms that are applied to clean the air.

The filters remove particles that are larger than the pore size of the filter media/fibers through the sieve effects.

The large particles with substantial mass are carried into the filter at high velocity, hit, and stick on the threads through inertial mass effect.

Lighter particles float to the filter media through turbulent flow and get intercepted by the filters.

The filter removes the remaining tiny particles through diffusion.

Also, the particles move through Brownian motion as they approach the fibrous.

They randomly hit each other, which reduces their speed and increases the chances of their capture by the media.

What are the Components of Panel Filter?

A panel air filter consists of the filter medium and holding frames.

Parts of panel filter

· The Frame Assembly

You can construct the structure using metals such as galvanized steel, aluminum, and cardboard.

Alternatively, you can also use different types of plastic such as polystyrene, polypropylene, polyethylene, and polyvinyl chloride to build the casing.

You can secure the frame using rivets.

The frame assembly holds the filter media in place.

· Filter Media

Normally, they perform the actual sieving of air.

They are held together with corner clips inside the frame.

Besides, they are placed between two wire mesh to keep them in place.

You can use either natural or bonded synthetic materials to make the medium.

 Why should you use a Panel Filter?

Panel filtration system are primarily responsible for protecting the most sensitive components of the system and providing quality breathing air.

If you don’t remove the dirt, they enter and stick on the motor, fans, coils, and sensors.

When they settle and build up inside the ductwork, it compels the fans to perform harder work to overcome the pressure drop resulting from the resistance.

There is also a possible risk of fire explosion when excessive dust settles on the motor and other mechanical parts.

Besides, you will spend more money on secondary replacement filters, which are more expensive because the excess dust loading will drastically reduce their life.

What are the Advantages of a Panel Filter?

You will get the following benefits from using panel filters:

  • Enhanced indoor air quality
  • Ease of use and replace
  • Cost-effective dust removal devices
  • Efficient dust removal equipment
  • The non-hygroscopic synthetic media does not support the growth of microorganisms
  • Pleated panels have high dust holding capacity
  • Protection of sensitive devices downstream
Is there any Difference between Panel Filters and Pleated Filters?

Some panel filters are pleated because the medium material has been folded into an accordion-like pattern to form pleats.

What is the Difference between Primary and Secondary Panel Filters?

The main differences between the two filters are the sizes of particles they can remove.

Panel filter system

· Primary Panel Filters

The filters can strain course particles ranging from 10 to 50 microns.

Besides, they help protect the secondary panel filters from excess loading, thus improving their service life.

The filters are cleanable.

· Secondary Panel Filters

You can use these filters for removing particles with diameters ranging from 1 to 10 microns.

You use different selective media in making them.

Where can you use a Panel Filter?

Panel filters are used in diverse industries to remove large particles from the process application.

They are most suited in applications that are not extremely critical such as ventilation, heating, and air-conditioning.

However, they are also used in gold and jewelry industries to retain dust with immense economic value.

They are also essential in protecting and extending the service life of secondary filters.

You will require panel filters in the following industries:

  • Automotive,
  • Pharmaceutical
  • Chemical
  • Aluminum manufacturing
  • Food processing
  • Paint manufacturing
  • Warehouses
  • Electronics
  • Nuclear plants
  • Hospitals
  • Computer store
  • Synthetic fiber manufacturing

What Materials can you use to Construct Filter Elements for Panel Filters?

Your choice of media material will depend on the requirements of your filtration system.

There are numerous materials from which you can select from for manufacturing the filter medium.

You can use synthetic or natural materials.

However, synthetic materials are more suitable because they readily adapt to diverse ventilation systems.

The materials for constructing pleated filters should be able to fold easily without cracking.

They include:

  • Polyester
  • Cellulose
  • Cotton
  • Fiberglass
  • Paper
  • polypropylene
  • polyethylene
  • Glasspaper
  • Wired cloth
  • Woven and non-woven fabrics
  • Membranes and felts
Can you Reuse Panel Filters?

Yes, you can reuse washable panel filters.

These filters are economical to use and will help you save a lot of money.

The filters are suited for applications with high dust contamination levels.

You can install them in vents and air conditioning systems.

Depending on the type of filter, you can clean them 20 times before you can replace them with new ones.

Also, the frequency of washing will depend on the rate of dirt accumulation though up to 3 cleanings in six months can be done under normal filtration conditions.

You can clean the panel filters through reverse jet cleaning at 19 mw.g or 100 PSI water pressure.

Some filters require spraying with filter cleaners and soaking for some time to remove the dirt.

Ensure that you consult the manufacturer’s instructions on how to clean the panel filters before settling for any method.

When should you Change your Panel Filters?

The frequency of filter element replacement or cleaning will depend on the level of air contamination, flow rates, type and grade of the filter.

You can install an automated differential pressure gauge with a timed alarm to signal when the filter elements are due for replacement.

Visual inspection alone can be erroneous since the eye can only detect dirt of up to 40 microns.

Similarly, some high rated filters may visually appear dirty, yet they haven’t reached the optimal efficiency levels.

Most disposable filters can last between several days/weeks and up to six months, depending on the filtration conditions.

How are Panel Filters Rated?

Pleated air filter

Panel filters are rated depending on the size of particles they can remove from the air.

Different rating systems provide a relative measure of filter efficiency.

Panel filters are usually rated through the minimum efficiency reporting value, traditionally abbreviated as the MERV system.

The rating system has a scale running from 1-16, where the lower values grade filters that remove large sized particles and higher grades for those that restrain small size particles.

Since panel filters are spread across different classes, they can capture particles ranging from 1-50 microns.

MERV 1-4: These are mostly primary panel filters and will remove particles above 10 microns in diameter.

You will use them in residential window AC units.

MERV 5-8: The majority are secondary panel filters and remove particles that range from 3-10 microns.

You can use them in industrial workplaces, commercial and residential buildings.

MERV 9-12: The panel filters remove particles between 1 and 3 microns.

They are suitable for hospitals, laboratories, businesses, and superior residential buildings.

Another rating system, EN 779, was introduced in Europe in 2012 and operated up to 2018.

According to the system, primary panel filters range from G1 to G4, while secondary panel filters range from M5 to F9.

Are there Quality Standards for Panel Filters?

Different countries have developed different standards that must be complied with by manufacturers within their territory.

The standards also vary from one industry to the other.

For example, ISO 16890 provides standards for testing and rating filters based on their ability to remove the most harmful particles to human health.

ISO 5011:2014 standards provide guidelines for testing, conditions, reporting, and comparison of panel filters used in combustion engines and compressors.

The standards are for filters used in industrial and automotive applications.

What are the Different Types of Panel Filters?

There are two main types of panel filters, the flat panel filter, and pleated panel filter.

· Flat-panel Filter

They are the most basic and cheapest air filters.

You can construct them from flat panel fibrous medium enclosed in a metal or cardboard frame.

They can only remove large particles from the air entering the system.

The majority of the flat panels comprise synthetic fibrous/porous material.

· Pleated Panel Filters

Pleated filters have a medium that is bent in accordion-like pattern and enclosed in the frame.

The bending pattern enables it to fit inside the frame without increasing the size of the filter.

Besides, the pleats increase the surface area and dirt holding capacity of the filters, which makes them more efficient than flat panel filters.

Moreover, the higher surface area ensures maximum filtration potential and minimum airflow resistance.

Also, the depths of the pleats correspond to that of the holding frame.

The pleats can be spaced at any length dictated by the filtration requirements and can assume narrow U shape or wide V shape.

When installing these filters, ensure that you expose all the medium surface to the air for filtration.

For filters with narrow pleats, perpendicularly install spacer sheets between the medium fold.

The spacers will prevent the screens from pinching together and losing surface area for filtration.

Cardboard disposable and metal V- shape panel filters are the most used.

In fact, the medium consists of a cotton-polyester blend or a synthetic material.

What Sizes of Panel Filters are there?

Many manufacturers produce ready-made standard size panel filters.

These sizes vary from one manufacturer to the other.

You can also place an order for custom-sized panel filters to suit your installation requirements.

However, customized filters will cost you more compared to standard size filters.

How much can a Panel Filter Cost?

The cost of panel air filters varies greatly.

The application requirements, rating, material of construction, among other factors, determine the price of a panel filter.

Generally, pleated secondary panel filters cost more compared to flat filters and primary filters.

For example, a simple panel air filter made of cardboard frame for conditioning system will cost between $2 and $10 apiece.

In contrast, a medium efficiency industrial panel air filter can cost up to $ 120 per piece.

What Factors should you Consider while Choosing a Panel Filter?

Metal air filter

Panel filter comes in diverse sizes, models designs.

Ensure that you consider all requirements that suit your filtration needs to maximize the filtration capacity.

The following factors will affect the effectiveness of your panel air filter:

  • Environmental conditions of your operations: This includes the temperature and flow rate of the air.

The acceptable pressure drop will also influence the choice of your filters.

  • Quality of construction material, including the support frame, media, and bonding material.
  • Nature of contaminants: Combustible and hazardous contaminants require higher filtration efficiency.
  • Filtration requirement: The nature of contaminants will influence the type of panel filter you purchase. You also need to know how often the process produces pollutants.
  • Rating of filters: Higher rating filters are more efficient and costly.
  • Budget allocation: Consider both initial purchase cost and operation cost.
  • Installation requirements: You must mount the filters accurately to avoid bypass air. Consider the dimensions of your mounting surface and available sizes in the market.
What Designs of Panel Filters are there?

There are numerous designs of panel air filters constructed to suit specific filtration requirements.

Below are some of the conventional designs or models that you can consider for your filtration needs:

  • Glassfibre panel filters
  • ProPleat S Coarse 60%
  • ProPleat S Coarse 60%
  • Wireframe filter
  • AirPleat Coarse 70%
  • Mesh filters
  • V-Form panel filter
  • Metal washable panel filters
  • Rod frame panel filters
  • Polyfoam washable panel filters
  • Pad holding frames
  • MiniCell High-performance panel air filters
  • Synthetic panel filters
How do Panel Filters compare to other Types of Air Filters?

There are three more types of air filters based on EN 779 and EN1822 standards of air filter classification.

These include semi HEPA filters, HEPA (High-Efficiency Particulate Air) filters, and ULPA (Ultra Low Particulate Air) filters.

All these filters can achieve higher filtration efficiency than panel filters.

For instance, you can use semi HEPA filters between grades E10 to E12 to remove particles that are above 0.5 microns at 99.5% efficiency.

You will use HEPA filters when you want to achieve a filtration efficiency not lower than 99.995% for particles that have greater than 0.3-micron diameter.

ULPA filters have the highest filtration efficiency and can remove particles above 0.3 microns at 99.99995%.

Some ULPA filters can remove particles as small as 0.12 microns.

Because of the high filtration efficiency, HEPA and ULTRA screens filter the air in very sensitive applications such as pharmaceutical industries.

They are also fundamental in the construction of biosafety cabinets and the manufacturing of electronic goods.

Panel filters allow higher airflow rates compared to HEPA and ULPA filters.

In contrast, HEPA and ULPA filters require more energy to move a similar amount of air through the screen as a result of high filter resistance.

HEPA and ULPA filters are more expensive than panel filters.

 How can you Maintain the Panel Filters?

Care and servicing for panel air filters is very simple, although it varies with the type of application.

Ensure that you routinely carry out proper maintenance to maintain clean ductwork.

Without proper maintenance, the mold can reproduce in the ductwork if the humidity reaches the dew point.

You can observe the following tips to ensure the appropriate function of the filters:

  • Label the filter casings with relevant information referring to the type of filter, date when they were last changed, and the pressure drop.
  • Immediately change damaged, collapsed, wet, and old infested filters.
  • Use access door with quick release and hinged access doors to ensure easy access to the filters for servicing.
  • Schedule filter service period out of the regular working hours. This scheduling will help you avoid disruption of the provision of clean air or dispersion of contaminants to the personnel.
  • If you must do servicing during regular working hours, ensure that you switch off the fans.
  • Clean the entire filter area during maintenance.
  • Use a clean piece of cloth to wipe out dirt from the filter casing.
  • Avoid spilling dirt into the ductwork when changing the elements.
  • Record all maintenance operations for future reference and planning
  • Keep the dirt content of washable filters below 50% to increase the lifespan of interior devices by almost double time.

With the information in this guide, certainly, you can choose a suitable panel filter for your applications.

However, in case you have additional questions on these filtration systems, contact FilSon Filters team.

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