<p> </p><p>  Ensure your Hayward cartridge filter operates smoothly with the Hayward CX900DA Knob. This locking knob is designed to securely fasten the cartridge filter components, providing a tight seal for efficient filtration. </p><p> Compatible with Hayward CX900G models, this replacement knob is easy to install and ensures hassle-free maintenance of your pool or spa filtration system. Constructed with durable materials, the CX900DA knob offers long-lasting performance and reliability, helping you keep your pool water clean and crystal clear. Whether you're replacing a worn-out knob or keeping a spare on hand, the Hayward CX900DA Knob is an essential accessory for your Hayward cartridge filter. </p><p> Trust Hayward for quality pool products and invest in the CX900DA Knob to maintain your pool's optimal filtration performance season after season.</p>