Precisely developed to fit various 660 spring compressors, making they ideal replacements for constructed in pond sieving arrangements Developed to stop large particles and debris from entering supporter, reducing the need for frequent maintenance and extending the existence of your pond sieving fan Produced from excellent, polyurethane spume, these sieves is constructed to endure extended outdoor use and continuous exposure to water These spongiform filter mattresses effectively seize dirt, debris, and sediments in pond water, improving water integrity and creating a better environment for fish and bushes The spongiform filter mattresses secure optimal stream by stopping fan blockages and maintaining neat, clear liquid in your pond otherwise spring, Manufacturer: Woedpez