Dri-Eaz HEPA 500 2nd Stage Replacement Pre-Filter (F271) – 12 PACK
| Your Filtration Needs | 1st Stage Filtration (Pre-Filter position) | 2nd Stage Filtration (Pre-Filter position) | Final Stage Filtration (Primary HEPA Filter) |
| Clean Water Loss Air Scrubbing | 1st stage pre-filter not necessary | Install 2nd stage pre-filter (113364 / F271) | Install HEPA 500 filter cartridge (111192 / F321) |
| Standard Air Scrubbing | Install 1st stage pre-filter (115471 / F270) | Install 2nd stage pre-filter (113364 / F271) | Install HEPA 500 filter cartridge (111192 / F321) |
| “First Pass” Efficiency Air Scrubbing | Install 2nd stage pre-filter (113364 / F271) | Install DOP 2nd stage pre-filter (103724 / F415) | Install HEPA 500 filter cartridge (111192 / F321) |
| Air Scrubbing and Odor Control | Install activated carbon filter (100053 / F397) | Install 2nd stage pre-filter (113364 / F271) | Install HEPA 500 filter cartridge (111192 / F321) |
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