Frequently asked questions

As usual, the sizes are on the sticker attached to the cardboard packaging. A sticker with the sizes is also applied to the vacuum bags.

Yes, the LFC filters fit in standard filter frames. The LFC filter frame is slightly thinner, making them interchangeable with standard filters.

Currently, the filter medium is not yet circular or recyclable, but the frame is. 

Currently, this option is not available. In the future, a color coding system may be introduced to differentiate between inlet and outlet filters.

Yes, we recommend wearing gloves and a face mask when replacing the filters.

This is our start-up model, but we are constantly working on product improvements, including the development of lighter tools.

Our filters are easier to dispose of and generate less waste, saving time for your technicians.

Two Velcro strips provide sufficient attachment and stability for the filter medium.

Our contracts are based on five filter changes, rather than a fixed term of five years. This can help build a long-term relationship with your end users.

In this case, the "Single Purchase" option can provide a solution, where you receive 20% of the frame costs back annually.

Under normal use of the frame, we offer a replacement frame if it gets damaged within its expected lifespan, following the assessment and approval of the complaint.

 Up to 6 to 8 dirty filter bags can be packed in a vacuum bag for disposal.

Up to 6 to 8 clean filter bags can be packed per vacuum bag.

At the moment, we only have standard sizes, but we are in the process of developing custom options. For large orders, we can discuss non-standard sizes.

Yes, the elastic is resistant to moisture.

Yes, the bags for safely disposing of contaminated filters are provided as standard.

Yes, the type of frame is independent of the functioning of the medium. The filters have been tested, and the differences between standard and LFC are negligible.

The pressure drop may be a few Pascals higher, but thanks to the larger filter surface area of the medium, the filter has a higher dust-holding capacity.

Replacing the filters takes approximately 30 seconds longer per filter.

The installation tool must be brought to the next LBK or project location.

Yes, technicians responsible for replacing the filters receive the installation tool free of charge, including the necessary training.

Yes, this can be arranged upon request.

This depends greatly on your specific situation or process. You can provide details about your situation, and one of our specialists will assist you remotely or visit you. In cases of air filtration, we can also map the air quality for you to determine which filter you need for the ideal indoor climate.

A micron is one-thousandth of a millimeter. For example, a human hair is between 50 and 70 microns thick.

The lifespan of a filter depends on several factors. Think, for example, of the type of filter, its application, dirt load, surface area, and more. Would you like to know approximately how long your specific filter will last in your situation? Feel free to contact us for personalized advice.

Replacing a filter depends greatly on the type of filter you need to replace. We always provide support in this process, and you can always contact us for assistance. Additionally, we offer (Inter)filter courses where we also explain how to replace your filters.

In general, filters need to be replaced when the resistance has risen to a specified value. This can be monitored using a differential pressure gauge. We offer various types of differential pressure gauges in our assortment.

We have standard-sized filters in stock. Non-standard air filters can generally be produced by us in-house. Other types of non-standard filters can be kept in stock upon request to ensure quick delivery. In such cases, specific agreements will be made.

Interfilter supplies various washable (industrial) filters made of stainless steel or other types of steel. We do not recommend washing disposable filters made of felt or other filter media. Washing damages the structure of the medium, which negatively affects the filter's efficiency. Additionally, the filter medium may release fibers that could end up in the process.

Yes, we supply filter housings for cartridges, bag filters, strainers, compressed air filters, dust extraction systems, and more. If you are looking for a specific housing, do not hesitate to contact us.

Yes. For some filters, we only need the manufacturer's product code. For other filters, we require additional information, such as dimensions, etc. Based on this information, we provide a suitable replacement.

Some filters, such as custom or special filters, are not listed on our website by default. However, even if they are not shown on the website, we can certainly supply these filters.

Fiberglass pocket filters are made from fine fiberglass fabric, while synthetic pocket filters are usually made of polypropylene. Fiberglass pocket filters are more resistant to moisture, such as mist, which helps prevent a rapid increase in pressure drop. They are often used for supply air near intake grilles where moisture can be drawn in.

Thanks to their fine fibers, fiberglass pocket filters are minimally dependent on electrostatic charge, similar to synthetic pocket filters of type NW. Both types offer high dust-holding capacity and low initial resistance, resulting in a long service life and low energy consumption.

Synthetic pocket filters are more commonly used in the food industry as there is less risk of fibers coming loose. They are mechanically stronger than fiberglass filters and are available in durable LFC versions, where only the filling is replaced, and the frame is reused.

The main difference between standard synthetic pocket filters and NW (NanoWave) pocket filters lies in the fiber structure. Standard filters are made of thicker thermally bonded fibers and are partly dependent on electrostatic charge, which can decrease over time, reducing filter performance. NW filters feature ultrathin microfibers that capture particles through physical attraction, without relying on electrostatic charge.

Additionally, NW filters have a higher dust-holding capacity, meaning they become saturated less quickly and maintain a lower pressure drop and energy consumption throughout their lifespan. This makes NW filters more durable and energy-efficient, ideal for applications with high dust levels and when long service life is required.

The old EN779:2012 filtration standard consisted of classes G1 to F9. The current ISO16890 standard is divided into ISO Coarse, ISO ePM10, ePM2.5, and ePM1 categories, each with a specific dust capture efficiency percentage. ISO Coarse-x% refers to a coarse filter that captures particles larger than 10 microns. ISO ePM1-x% filters particles smaller than 1 micron from the air. Read more about the ISO16890 standard or feel free to contact us with any questions.

No, but we have several partners with whom we can arrange this. For more information, feel free to contact us.

In general, a filter with at least filter class ePM1 will be used for supply air. For return air or as a pre-filter, a filter in the Coarse, ePM2.5, or ePM10 class is often used. As a guideline for determining which filter class is most recommended, you can contact us, and we will select the appropriate filter based on the Eurovent recommendation standard 4/23.