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All of the OmniAire machines are supplied with a primary/secondary prefilter that includes both a tactifier and an anti-microbial treatment.

Our prefilters are custom cut to fit each OmniAire HEPA negative air machine. Frequent changing of the inexpensive prefilters will dramatically increase the useful life of the more expensive HEPA filter. All prefilters are packed in boxes of 20 filters.
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