Review on Nispira True HEPA Filter Replacement for Envion Therapure TPP440 TPP540 TPP640 TPP640S Air Purifier - Comparable to Part TPP440F, Pack of 2 by Marc Cahoon
Fits great, air performance is slightly reduced.
These replacement filters fit exactly like original filters which are no longer available. The only downside is that the airflow is reduced a little more than with the original filters. I wish I could buy additional original filters when they become available. The car was only 2 years old before the filters ran out. That is not right.
- Consistent test results
- Could have chosen a newer model
New products
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