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AAF Flanders HEPA, ULPA & High-Capacity Filters

HEPA (High Efficiency Particulate Air) and ULPA (Ultra Low Penetration Air) filters capture 99.97% (HEPA) to 99.999% (ULPA) of particles down to 0.3 microns — the standard for cleanrooms, biosafety, pharmaceutical manufacturing, semiconductor fabs, hospital isolation rooms, and nuclear facilities. AAF Flanders manufactures the most extensive HEPA and ULPA product line in North America, with construction options ranging from standard residential-style cells through gel-sealed terminal modules engineered for ISO Class 1 cleanrooms.

The HEPA/ULPA Product Line

  • BioCel — gel-sealed HEPA/ULPA cells for cleanroom and biocontainment applications. Available with aluminum, anodized, or stainless frames.
  • AstroCel I — workhorse HEPA filter for general cleanroom service. 95% DOP through 99.999% ULPA efficiencies.
  • AstroCel II — high-airflow HEPA in standard nominal cleanroom sizes (e.g., 23-5/8 × 47-5/8).
  • MEGAcel I & II — extended-surface HEPA with 4× to 8× the media area of standard cells, for facilities prioritizing low pressure drop.
  • PureFlo — terminal HEPA modules with integral diffuser, gel-seal options.
  • Standard HEPA panels — replacement HEPA for existing housing systems, multiple gasket and seal configurations.

Specification & Compliance

  • HEPA: 99.97% efficiency at 0.3 micron MPPS, IEST-RP-CC001 grade C
  • ULPA: 99.999% efficiency at 0.12 micron MPPS, IEST-RP-CC001 grade F
  • UL 900 Classified on standard cells; UL 586 Type 1 on biocontainment cells
  • Individually scan-tested on aerosol challenge per IEST-RP-CC034
  • DOE-STD-3020 compliant options for nuclear and biocontainment
  • Section 889/NDAA compliant for federal procurement

Application Examples

  • Pharmaceutical & biotech — fill/finish cleanrooms, aseptic processing, bioreactor exhaust
  • Semiconductor & electronics — wafer fab, photolithography, assembly cleanrooms
  • Healthcare — operating rooms, isolation suites, compounding pharmacies
  • Defense & aerospace — clean assembly, optical labs, propulsion test cells
  • Nuclear — glovebox exhaust, containment ventilation, decommissioning

HEPA and ULPA are spec-driven — sizes, gasket positions, frame materials, seal types, and efficiency grades vary by housing. We carry stock product and source non-stock spec from AAF Flanders direct. Send us your filter spec sheet, model number, or housing data and we'll quote the exact match. Call 1-866-469-8556 or request a quote.