LTWHOME Large Square Foam Filter Compatible with Zoo Med's 501 External Filter (Pack of 6) Custom designed and manufactured for

Custom designed and manufactured for Tetra All Clear Choice Biofilters

Pack include: 8 x Coarse Filter Foam

Custom designed and manufactured for vac-sweep pool cleaner hose tail

Provide a large surface area for trapping particulate debris and enhances biological filtration

Change every 3 to 6 months

LTWHOME Large Square Foam Filter Compatible with Zoo Med's 501 External Filter (Pack of 6) Custom designed and manufactured forPack include: 6pcs. Size: 13. 38 inches by length, 3. 94 inches by width, 2. 17 inches by height. This filter pads is custom designed and manufactured for Zoo Med's 501 External Filter. Provides efficient water flow with less clogging for long lasting filtration.