Filter-monster Replacement Hepa Filters

About The Item: Compatibility: Compatible With Therapure Tpp440f Filters. Engineered To Fit Therapure Envion Air Purifier Models Tpp440, Tpp540, And Tpp640. Air Quality Improvement: True Hepa Filtration Is Rated H13 And Removes Up To 99.97% Of Airborne Particles As Small As 0.3 Microns In Size Including Dust, Smoke, Pollen, Pet Hair And Dander, Mold Spores And Dust Mites. Airtight Seal: Foam Gasket Seal For High Performance Filtration Directs Air Through The Filter And Keeps Air From Escaping A.