Easy to Replace: Most importantly, you need to make sure your filter is a 10-20 aquarium filter. This top fin filter cartridges come in pre-assembled construction, just shake and rinse, then replace the old aquarium filter replacement for EZ-Change #2 with a new.

Keep Aquarium Clean: The outside of the aquarium filter cartridge is made of thickened filter spray cotton, which is durable and can filter out impurities, dust or other fine impurities in the water when it is reused, making the water clearer and purer.

Specifications:
Material:Filter cotton
Color: blue
Size: 5.91 x4.33 Inch

Package includes:
16 x Filter

Notes:
Manual measurement, please allow slight errors on size.
The color may exist a slight difference due to different screen displays.