AP303 AP304 Replacement Filters for and Air Purifiers, HEPA Filter with 3 Stage Filtration, 4 Pack (Standard-White)

Compatible with AP303/304 and AP303 AP304 Air Purifiers 3-Stage Filtration System: Pre-Filter, HEPA Filter, and Activated Carbon Filter HEPA Filter Adsorbs 99.97% of Particles as Small as 0.3 Microns Made of FSC-Certified Paper with a MERV Rating of 17 Easy to Install and Replace with a Dual-Sided Air Intake System