LTWHOME Bio Foam Filter Pad Fit for Tetra 25997 Grid in Tank 20 Internal Filter (Pack of 12) Packing include: 12pcs blue coarse

Packing include: 12pcs blue coarse filters

If your Filter is Approximately 12" x 3"

Custom designed and manufactured for the Fluval FX5 filtration systems

Inhibits the growth of odor causing bacteria and mold

LTWHOME Bio Foam Filter Pad Fit for Tetra 25997 Grid in Tank 20 Internal Filter (Pack of 12) Packing include: 12pcs blue coarsePack include: 12pcs foam pads without plastic frame. Custom designed and manufactured for Tetra Whisper 20i & 40i Internal Power Filter, compare to part # 25997. Provide efficient water flow with less clogging for long lasting filtration. Provides both mechanical and biological filtration. Safe, washable and reusable.