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Review on Nispira True HEPA Filter Replacement for Envion Therapure TPP440 TPP540 TPP640 TPP640S Air Purifier - Comparable to Part TPP440F, Pack of 2 by Jorge Kehayas

Revainrating 5 out of 5

Good deal and it fits!

I received the filters the next day after ordering. I installed one in an air purifier which took a few tries but once it "locked" properly I was able to start the air purifier and it seems to be quieter. This is a good deal and I would buy them again from this seller.

Pros
  • dream come true
Cons
  • secret