4 pk fits Size LG. Tetra WHISPER 1, 2, 3, 20, 30, 40, 60, 40i filters (PRE-FILLE

Tetra: Whisper 1, 2, 3, C, 20, 30, 40, 60, 20i, & 40i. Tetra: Triad filters - all. Tetra: Tetratec PF150 & PF300. Tetra: Pulsar 125, 200 & 300. For use in the following aquarium power filters.

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