Product: Top Fin Retreat Filter Large, RF-L (2 Count)
Brand: Top Fin
Top Fin RF-L Large Retreat Filter Cartridges are easily replaceable, and feature coconut shell activated carbon, which serves to absorb undesirable odors, pigments and chlorine. This is a 2-month supply. Product Dimensions: 7.9 in L x 2.7 in W (20 x 6.8 cm)

Search query: xsmall top fin fish filter
Relevance: Substitute