Harbor Freight Tools


1/4 in. NPT(F) Mini Filter

High flow modular filter removes water and particles from air lines

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ARO F35221-410 at $90.99 Save 78%

Available Online by Dec. 9

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The MERLIN™ Mini Filter removes moisture and solid particulates from air lines, extending the life of your air tools. Filters water and particles down to 5 microns. Durable enough to withstand daily shop use.

  • 1/4 in. NPT(F) filter has a modular design with metal bowl and sight gauge
  • 55 CFM max flow at 100 PSI
  • 23° to 175° F operating range

Flow rate
55 CFM
Air inlet size
1/4 in. NPT(F)
Maximum pressure (PSI)
250 PSI
Shipping Weight
1.45 lb.
Temperature range (deg F)
23° to 175° F
Working pressure (psi)
100 PSI
Filtration (microns)
5 micron
Note: Specifications are approximate and subject to change

100% Satisfaction Guarantee! If for ANY reason you are not satisfied with this item, you may return it within 90 days for a full refund or replacement.