Economic Price Nispira True HEPA Filter Replacement Compatible with Envion Therapure TPP440 TPP540 TPP640 TPP640S Air Purifier. Compared to Part TPP440F. 3 Packs

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)
Pre-filter helps trap visible dust such as hair. Approximate Dimensions: 17.8 x 5.25 x 2.4 inches. 3 Filters included.
Suggest to replace every 6 month to achieve optimal performance
100% customer satisfaction guaranteed. Quality meets or exceeds leading national brand