- Made from durable ABS plastic, this knob ensures extended use and reliability for your pool maintenance needs. - Compatible with various types of pools, both indoor and outdoor, this knob is essential for maintaining optimal water conditions. - Enhance your pool maintenance routine with this easy-to-install knob, designed to work seamlessly with efficient filtration systems. - Keep your pool filtration system running smoothly with the CX900DA knob replacement, specifically engineered for straightforward replacement. - Ideal for residential pools, community swimming areas, or spas, this knob provides a practical solution for maintaining water quality and clarity. - Its robust construction and compatibility make it a reliable choice for pool owners looking to simplify their maintenance tasks and improve performance.