1. Sizes as small as 4” X 4” and as large as 36” X 72” in anodized aluminum frames as short as 2 ¾” and as tall as 9 ½” in a single extrusion. With multiple extrusions the finished filter can be much taller.
2. Non-standard efficiencies (as high as 99.999995@ 0.10 micron in micro-fiber glass media).
3. Non-standard frame heights and configurations.
   
   See PDF’s
   - PDF: gel pocket frame with 2.875” height (coming soon)
   - PDF: gel pocket frame with 3.875” height”
   - PDF: Taller than standard gasket frame”
    
4. Non-standard protective face screens such as anodized aluminum and stainless steel.
   
    
5. Various gasket types and configurations
   - PDF: see 3 PDF for gasketing
    
6. Gel seal on the filter
   
    
7. Knife edge for sealing in a customer provided gel trough
    
8. Filter frames that extend below the media, allowing attachment of accessories such as ionization or lighting.
   

Information on the basic American Air Filter HEPA/ULPA and PTFE filters is below:

A) American Air Filter’s Astrocel II 99.9995% @ 0.10 microfiber glass ULPA filter:
- PDF: Astrocel II LPD AFP-1-404C

Note: One of the most important features of the FFU is the proper selection of the media for the application (E.G. must use PTFE for 300 mm applications).

B) American Air Filter’s Astrocell II 99.99% @ 0.30 microfiber HEPA
- PDF: Astrocel II LPD AFP-1-404C

c) Lower Pressure Drop Filter-
For those applications where a lower initial pressure drop, and/or higher CFM output is desired, pleat pack heights of 3” or 4” can be substituted for the standard 2”.
- PDF: Astrocel II LPD AFP-1-404C

D) PTFE Filter/300 mm Applications-
For applications where the FFU will provide clean air to a 300 mm semiconductor application the Sematech I300I Factory Guideline Compliance: Factory Maturity Assessment (FIMA) for 300 mm. defines the filter as being low boron, and made of PTFE media (the full document is available by request from TES-Clean Air Systems)

- PDF: Megacel