Improved system: Replace worn parts of the SF15110 sand with these compatible accessories. Efficient filtration: ensures optimal filtration of pool water for a debris-free swimming experience. p> Simple installation: Quick and easy installation, direct replacement for convenient use and maintenance. Durable and reliable: Made from high quality PVC for long-lasting, wear-resistant performance. 'wear and resistant to aging and cracking. Includes a pool pump cover to protect the sand and filter pump from weather and wear. Note: Data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be color differences, please refer to the actual item received.