These Woodworking Cartridge Filters are ideal when used as after filters for the high efficiency cyclones designed by Bill Pentz.  Be sure to see Bill's website for design details, and check out the Clear Vue Cyclones offered by Ed and Matt Morgano.  The hot set up for a cyclone system is a pair of the 9L300BL filters, in conjunction with an inlet plenum and dropout box.  Click on the image on the left for a larger, printable view.  When applying the 9L300BL to a cyclone, one important factor to look at is air flow.  As a general rule, we recommend a pair of filters for any system moving more than 700 or 800 CFM.  (800 cfm corresponds to the required flow in a properly designed 6" dust collection system.)  If your system is designed to move less than 700 CFM, then a single filter will do just fine.  Remember, a single filter has 4 times the pressure drop of a pair of filters, since the math includes a square function, so there are huge benefits to having that extra filter area.  If you have specific questions, or need a recommendation, please give us a call.

We have also had a great deal of success replacing the bag filters used on Jet, Delta, and Harbor Freight Dust Collectors.  Go here for more info on converting to a cartridge.

9E300BL on Harbor Freight Conversion
Rick Wynn of our office had the pleasure of working with Tony Baker, who lives in the area.  They were able to successfully adapt our Farr-Style 9E300BL to the Harbor Freight 2 Hp dust collector, and documented the conversion procedure.  Click here to see how it was done.

35A Series Kits for converting bag type units to pleated cartridge
This kit has been successfully adapted to most of the popular bag type dust collectors, including Harbor Freight, Jet, Delta, Grizzly, Shop Fox, General, Wood Tek, and Penn State.  Click here for more information on the 35A kits.

We also provide Discount Pricing on Torit Cartridge Filters, HEPA Filters, Vee-Bags, Prefilters, Final Filters, and spare parts for Torit, AQE, Murphy-Rodgers, Aercology, and Airflow Systems.  Our aftermarket prices on the most commonly used filters are typically 35%-50% below manufacturer's retail price, and many come from the same production line as the OEM filter!  All aftermarket filters and replacement parts are guaranteed to perform as well as the OEM equivalent.  For discount pricing on Genuine Torit Filters please contact us directly by phone, fax, or email.

...and don't forget to check out our selection of Flex Hose and Clamps!

New...Click Here for our Bargain Page of odd Filters and Hose.

ASHRAE 52.2 Efficiency Chart
(Click Here)
Beware of filter suppliers that are claiming HEPA efficiency with a round cleanable dust collector filter.  To the best of our knowledge, there is no such thing as a "Cleanable HEPA" here in the United States.  Here in the U.S., a filter must meet MIL Std 282 to be called a HEPA...that's 99.97% efficient at 0.3 microns.  European HEPA standards vary widely from H10, which is only 85% efficient at 0.3 micron, all the way up to H14, which is 99.995%.  Before you risk your health, or waste a lot of money on a filter, be sure to do your research.  A quick Google search for
 "european hepa efficiency", or "en 1822" will turn up valuable information.  Again, in the United States, a filter must be 99.97% efficient at 0.3 microns to be rated HEPA.

We are now offering our Farr Style cartridges in the Advanced Nanofiber laminate which carries the
MERV 15 efficiency rating.  Our new 9L300NANO has recently been tested and approved by Bill Pentz for use on fine woodworking dust.  Bill's website can be accessed Here, where you will find a vast amount of information for the hobby woodworker.
Please go to our Advanced Nanofiber Page for more information on these filters.
 

For shipping rates, please click Here. 

Key to Filter Medias:
       Blend = 80/20 Cellulose/Polyester
        FR = Fire Retardant Treatment
        M = PTFE Membrane
        ME =  Molded Plastic Ends
        MB = Melt Blown Fine Fiber Treatment, 99.999% at 0.5 micron
        NANO = Nanofiber Laminate, MERV 15, 99.999% at 0.5 micro
        NL = No Outer Liner
        OL = Outer Liner (No Inner Liner)
        SS =  Stainless Steel End Caps
        SB = 100% Spunbond Polyester
        x = Proprietary Media

Torit, Aercology, Downflo, Dryflo, Easy-Trunk, ECB, Porta-Trunk, ProBooth, Ultra-Web® II, ToritBuilt®, and Vibrashake are all registered trademarks of the Donaldson Company.

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UPS charges will be added to your order.
Most orders will ship the next day.