Specifically designed for the Fluval U4 filter, the U4 Bio-Foam Pad captures large particles and debris for effective mechanical filtration.

Key features:

• Mechanical filter media
• Fits perfectly inside the filter chamber to prevent debris from escaping
• Ideal pore size allows efficient water flow, less clogging and long-lasting filtration
• Suitable for freshwater, saltwater or reptile environments
• Convenient 2-pack format

Contents:  2 pieces per pack.

Manufacturers Code: A-488