Tetra Pond Replacement Foam provides the useable filtration area your Flat Box Pond Filter needs to effectively trap and remove contaminants and particles from your pond water.

• Reduces pump and fountain clogs
• For use with FK3, FK5, FK6 and SF1 pond filter boxes
• Suitable for mid-size ponds
• 1 kit includes 1 coarse and 1 fine pad

Pad Size: 11.5"L x 9"W