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HEPA & ULPA Filters That Keep Your Cleanroom Compliant and Running

Tested to EN 1822 standards with complete scan reports for every unit. Manufactured under ISO 9001 quality system and delivered in 1-2 weeks to keep your production on schedule.

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Find the Right Filter for Your Application

From standard cleanroom maintenance to semiconductor-grade ultra-clean environments, choose the filtration solution that matches your facility’s requirements and keeps your operations running smoothly.

    High-efficiency particulate air (HEPA) terminal filter for laminar flow hoods and ceiling grids

    Mini-Pleat HEPA Filters

    Maximize airflow in tight ceiling spaces. These compact filters deliver H13 and H14 efficiency without sacrificing pressure drop performance.

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    HEPA Separator Filters

    ULPA Filters

    Achieve ISO Class 3 to 5 environments with U15 and U16 rated filters. Ideal for semiconductor fabs and aseptic pharmaceutical production.

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    HEPA Gel-Seal Filters

    Gel Seal HEPA Filters

    Eliminate leak risks with factory-applied gel seals. You get reliable installation every time without complex clamping or gasket alignment.

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    High-Flow HEPA Filters

    Knife Edge HEPA Filters

    Speed up filter changes in FFU systems and ceiling grids. The knife edge design lets your team swap filters quickly during maintenance windows.

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    Equipment HEPA Filters

    High-Temperature HEPA Filters

    Engineered to perform in your ovens, autoclaves, and nuclear applications. You maintain HEPA-grade filtration even in extreme he

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    ULPA Filters

    Cleanroom Ceiling Modules

    Get complete fan filter unit solutions for new builds or retrofits. Pre-assembled modules reduce your installation time and commissioning effort.

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Close-up of white high-efficiency filter media with uniform zig-zag pleating

Get Your Filter Quote Today

Tell us your specifications and application requirements. You will receive a detailed quote with pricing, lead time, and certification documentation within 24 hours.

What You Get with Every Order

From the moment your filters arrive, you benefit from certified quality, consistent performance, and documentation that keeps your facility audit-ready.

  • Complete Documentation

    Every filter ships with EN 1822 scan test reports and full traceability records for your quality files.

  • Consistent Performance

    ISO 9001-certified manufacturing ensures every batch meets the same specifications, reducing re-validation hassles.

  • Reliable Supply

    Dedicated production capacity and strategic inventory ensure your cleanroom never runs short of filters.

Filters at Work Across Industries

From semiconductor fabs to pharmaceutical cleanrooms, see how facilities like yours rely on certified HEPA and ULPA filters to protect critical processes and maintain compliance every day.

Your Cleanroom Compliance Starts Here

When an auditor questions your filter documentation or a late shipment threatens your maintenance schedule, your entire operation feels the pressure.

We provide EN 1822 certified filters with individual test reports, delivered in one to two weeks, so you stay audit-ready and keep production running smoothly.

  • Individual scan test reports included

  • Standard delivery in one to two weeks

  • Custom sizes and seal options available

Advanced mini-pleat filter manufacturing equipment processing white filter media in a cleanroom

Proven Performance in Energy Applications

See how we help specialized facilities maintain compliance and save cost.

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“We were struggling to get consistent documentation from our previous supplier. Since switching to Weier, every filter arrives with its own scan test report. Our quality team no longer spends hours chasing paperwork before audits.”

Thomas Weber
Operations Director

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“We were struggling to get consistent documentation from our previous supplier. Since switching to Weier, every filter arrives with its own scan test report. Our quality team no longer spends hours chasing paperwork before audits.”

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Mei Lin
Production Manager

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“Lead times were killing our maintenance schedule. Weier quoted two weeks and delivered in ten days. Now we plan our cleanroom shutdowns with confidence because we know the filters will be there when we need them.”

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J Andrew Collins
Facility Manager

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We struggled with H2S and formaldehyde odors in our waste treatment area. Their potassium permanganate impregnated media cleared the air immediately and protected our control room equipment.

Portrait of a satisfied industrial client sharing a success story about Wair filtration solutions
Liang Zhou
Industrial Process Engineer

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Our sterilization tunnels hit 400°C, and standard filters kept failing. WAir’s stainless steel high-temp filters handle the heat perfectly without warping, keeping our line running smoothly.

Headshot of a commercial facility manager satisfied with our HVAC filter solutions
Robert Hayes
Production Manager

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After switching to your impregnated activated carbon filters, we saw a clear improvement in removing acidic and alkaline gases. The adsorption efficiency stayed stable around 80%, and the performance met our expectations well.

Portrait of a satisfied industrial client sharing a success story about Wair filtration solutions
David Liu
Environmental Engineering Manager

Your Path to Reliable Filtration

We make it easy for you to get the right
high-efficiency filtration solution.

  • Send Your Inquiry

    Share your specifications and quantities. You will receive a detailed quote within 24 hours.

  • Confirm Your Order

    Approve the quote and we lock in your production slot with a confirmed delivery date.

  • Production & Delivery

    Every filter is scan tested and ships with complete documentation ready for your records.

Frequently asked questions

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Our filters are tested and classified according to EN 1822 and ISO 29463 standards. Each filter comes with an individual scan test report showing actual efficiency and penetration values. We also provide certificates of conformance and material declarations for your compliance files.

Standard sizes and configurations typically ship within one to two weeks from order confirmation. For custom sizes, non-standard media, or special frame materials, lead time is usually three to four weeks. We will confirm exact timing when we quote your project.

Yes. We regularly produce custom sizes to fit legacy FFU systems and non-standard ceiling grids. Send us your drawings or sample dimensions, and our engineering team will confirm feasibility and provide a quote for your specific requirements.

Every HEPA and ULPA filter undergoes individual scan testing regardless of order size. Our manufacturing process follows documented quality controls, and we maintain full traceability from raw materials through final packaging. You receive the same performance whether you order 50 or 5,000 filters.

Our application engineers can help you choose the right filter class, media type, and frame configuration for your specific environment. We review your airflow requirements, particle targets, and installation constraints to recommend the most effective solution.

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Download our catalog to check all of our products and data sheet.

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