Compatible to Idylis B Carbon Pre-Filter 4-Pack, Fits Idylis Air Purifiers IAP-10-125, IAP-10-150, Model # IAF-H-100B, IAFH100B by CFS Compatible to Idylis B Carbon Pre-Filter 4-Pack, Fits Idylis Air Purifiers IAP-10-125, IAP-10-150, Model # IAF-H-100B, IAFH100B by CFS 4-Pack of Carbon Activated Filters 6.75"x7.75"x.25" Compatible with Idylis Air Purifiers IAP-10-125, IAP-10-150 Hepa filter IAFH100B Filter B