8-Pack Large Replacement Filter Cartridges for Tetra Whisper Bio-Bag Filters, Co
Compatibility: Works perfectly with Whisper IQ20, IQ30, IQ45, IQ60 Power Filters and 20i & 40i Internals, as well as PF20, PF30, PF40, PF60 Power Filters. Simply rinse and place in your Whisper filter for quick setup.