Tetra Whisper® Bio-Bag® Replacement Cartridges Size:Large, 3 ct The pail holds up to

The pail holds up to two weeks of cat litter (for one cat)

Flat steak-house style grids

Classic great taste since 1926

Formulated to meet the unique needs of indoor cats

Controls Patio

Tetra Whisper® Bio-Bag® Replacement Cartridges Size:Large, 3 ct The pail holds up toFor the ultimate in convenience, choose Assembled Whisper Bio Bag Cartridges. Packages are color coded, making it easier than ever to remember which size to purchase. Fits: Small 3i Internal Medium PF10 Power Filter, 10i Internal and Reptofilter 90 GPH Large 20, 30,40 and 60 Power Filters and 20i & 40i Internals Instructions 1. Rinse Bio Bag under cool tap water to remove carbon dust. 2. Open lid and insert Bio Bag into filter. 3. Replace clogged Bio