About our Custom Air Filter Solutions

We offer bespoke air filtration solutions such as our wireframe filters. Each frame can be constructed to any size up to 1.8m on the longest side and include special features such as hinges, hooks, pull tabs or v/w bends.

Our Reticulated Polyester Foam can be formed into cylinders, cones and other shapes, with open front steel wire mesh stiffeners if required, as well as custom-sized pads.

We also offer custom sizes of our panel, bag and HEPA filters.

Custom Air Filters

Custom Size Air Filters Built To Your Specification

Custom filters are air filters that are specifically designed to fit your air system.

If you have a bespoke requirement when it comes to your air filters, then get in touch with us as we are able to design and build custom air filters to your exact specification.

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Self Service Custom Panel Filters

Get the perfect fit every time with the G4 Pleated Panel Filter EU4 Custom from Filters Direct! Our easy-to-use custom ordering system lets you select the exact dimensions you need, ensuring a hassle-free replacement for any HVAC setup. No more compromises — just high-quality, made-to-measure filters delivered fast. Customize your order today and experience the ultimate in convenience and performance!

Nuaire Drimaster 365 DRI-365

Self Service Custom Wire Frame Fan Coil Filters

Get a perfect fit with Filters Direct’s Custom Size Wire Frame Fan Coil Filters – ideal for stopping dust and dirt in MVHR units, AC units, fan coils, and more. Made with a strong 3mm steel frame and synthetic media, they’re lightweight, durable, and with low-pressure drop. Order to your exact size, with optional hinges and pull tabs for easy installation. Built tough with cross members every 300mm to prevent bowing.

Custom Wireframe Solutions from Filters Direct

Our Customers Trust Us For Their Custom Air Filters

Our excellent Trustpilot reviews show how committed we are to making the whole buying experience as simple and supportive as possible. Our customer support team is dedicated to helping you choose the right filters quickly and confidently. If you need assistance, a real person from our company is just a call, email or live chat message away.

Trustpilot review praising FiltersDirect.uk for manufacturing and supplying custom‑sized air filters, shown with a 5‑star rating and strong customer satisfaction
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Custom Air Filters Case Studies

Take a look at how we've helped design and build custom air filters for these businesses below.

Streamlined Folding Filter Solution Simplifies Cubed Exhaust Frame Filtration

Read more about Streamlined Folding Filter Solution Simplifies Cubed Exhaust Frame Filtration>

Innovative Custom Air Filter Solution Reduces Costs for Metal Frame Filter Users

Read more about Innovative Custom Air Filter Solution Reduces Costs for Metal Frame Filter Users>

Valve Filter – Designed and Manufactured by Filters Direct Ltd

A customer approached Filters Direct to manufacture a valve filter designed to sit just inside the air intakes of extraction vents in apartments. They supplied technical drawings and dimensions and needed 600 units.

We began by designing the plastic ring for the filter base in 3D modelling software. We built the shape in a 2D view, converted the outline into a spline, and then used a sweep to turn that spline into a cylindrical form.

From there, we went back and forth between 3D printing and the modelling software until we were happy with the design, particularly the notch that the media attaches to.

Next, we made a ring from mild steel using our auto-bending machine and designed a template to cut a cone from G3-grade non-woven synthetic media. The cone was then sewn onto the steel ring, which was hot glued into the 3D printed ring.

Custom white filter sock for Nuaire Q-Aire valve, shown with Cinema 4D model, STL files and customer enquiry email

Tractor Cab Air-Intake Filter for Pesticides – Designed and Manufactured by Filters Direct Ltd

A client came to Filters Direct with a large, clunky carbon bag filter and asked whether we could improve the design. The filter was made for installation in tractor cabs, for use when handling pesticides. They felt the existing filter was basic and wanted something more purpose-designed for the situation and more compact.

Our solution was a “T” shaped metal channel packed with compacted carbon granules, held in place by fine PVC mesh. A layer of non-woven carbon media is hot glued on top, followed by a final layer of G3 grade non-woven media to catch the larger dust particles.

We’ve since made further iterations to fine-tune the design to the customer’s needs, which reflects our commitment to continuous improvement and making sure our customers get the best products we can manufacture.

Black carbon tractor cab filter in an aluminium U-section frame, with close-ups of the riveted mitred corners
Custom Air Filters

Custom Air Filters FAQs

Here are answers to some of the most common questions we get asked about custom air filters..

Custom air filters are filters that are specifically designed and manufactured to fit unique or non-standard sizes and configurations. They are tailored to meet the specific requirements of an HVAC system or other air filtration applications.

You might need custom air filters if your HVAC system or air filtration equipment has non-standard dimensions or if you have unique air quality requirements. Custom air filters ensure a proper fit, optimal filtration efficiency, and improved air quality by addressing specific filtration needs.

To determine the right custom size filters, you should measure the exact dimensions of your existing filter or the filter housing. Measure the length, width, and depth of the filter, and ensure accuracy. Then get in touch with us and we can assist you in selecting the appropriate custom size filters.

Yes, custom air filters can provide better filtration than standard filters. Since they are tailored to fit precisely, they minimise gaps and bypassing, ensuring that air is effectively filtered before entering the system. Custom air filters can be designed with specific filtration media, such as HEPA or activated carbon, to address specific air quality concerns.