Nispira True HEPA Filter Replacement Compatible with Envion Therapure TPP440 TPP540 TPP640 TPP640S Air Purifier… Price: $22.99 (as of 04/10/2023 21:01 PST- Details)

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Premium HEPA filter replacement compatible with Therapure Air Purifier TPP440 TPP540 TPP640

It replaces Therapure part TPP440F black casing filter. (NOT TPP240 which is longer and slimmer)

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