HEPA/DOP/ASHRAE Panel & Cylindrical Filters

Higher Filtration Efficiency and Easier Maintenance

Donaldson WSO Mist Filter hero image | AIRPLUS Industrial


AIRPLUS supplies HEPA & DOP panel & cylindrical filters made of lightweight sturdy aluminum, contain superior filter media & come with built-in handles for easier maintenance.

HEPA Panel Filters

  • Higher filtration efficiency: 99.97% on 0.3 micron particles (emits three-0.3 micron particles per 10,000 particles)
  • Exhaust airstream is near the breathing zone
  • Lighter loading applications
  • Visible emissions are unacceptable
  • Customer specified HEPA level filtration

95% Panel Filters

  • 95% on 0.3 micron particles (emits 500-0.3 micron particles per 10,000 particles)
  • Heavy loading applications
  • Exhaust airstream is not near breathing zone
  • Customer specified 95% DOP level filtration


Take a closer look at our panel filters.


  • High-density urethane gaskets
  • Interlocking and sealed dovetail corners
  • Single gasket design allows the filter to be installed with the gasket either upstream or downstream depending on the application

Built-In Handles

  • For easier maintenance

Lightweight Aluminum

  • Provides built-in corrosion resistance
  • Resists swelling in moist conditions
  • Less weight than wood board, galvanized, or stainless steel frames

Expanded Metal Liners

  • Reinforced squareness and rigidity in frame construction
  • Protects filter media from damage

Proven Separator Pack Design

  • Creates uniform flow channels
  • Every pleat has positive separation

Filter Media

  • Our HEPA and 95% DOP media both outperform the leading competitors
  • Proprietary, premium materials
  • Non-glass fiber content provides greater media strength
  • Enhanced oil loading capabilities in both HEPA and 95% DOP

Urethane Potting Compound

  • The media pack is securely attached to the frame interior
Donaldson HEPA panel Filters | AIRPLUS Industrial
HEPA panel Filter
Donaldson Ultra Cylindrical HEPA Filters | AIRPLUS Industrial
Ultra Cylindrical HEPA Filters


Donaldson Panel HEPA Filters brochure download icon | AIRPLUS Industrial
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Donaldson Cylindrical HEPA Filters brochure download icon | AIRPLUS Industrial
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Donaldson Replacement Filters

Ready to Ship in 24 Hours

With hundreds of varieties to choose from and all in-stock orders shipped within 24 hours, AIRPLUS is the best, most reliable source for high-performance cartridge and bag filters.