Product: Locking Knob for CX900G Pool Filter (Replacement for CX900DA) — Set of 9 Key benefits - Restores secure locking of your CX900G filter head so the system seals properly and maintains filtration performance. - Reduces downtime by keeping spare parts on hand for quick repairs and routine maintenance. - Fits original design and function, so installation is straightforward and reliable. What it is and what it does - Function: Replacement locking knob designed to fasten and lock the filter assembly in place, ensuring a tight seal and efficient water flow through the filter. - Compatibility: Specifically made for the CX900G pool filter and is a direct replacement part for the CX900DA. - Pack size: Includes a set of 9 knobs so you have enough spares for multiple repairs or future needs. - Size: Each knob measures 15.7 cm x 6 cm, matching the original part dimensions for correct fit and operation. - Construction: Manufactured to original equipment specifications to match the fit and function of the factory part. Performance and reliability - Designed for easy installation and secure locking to restore correct filter head sealing and prevent leaks. - Using matching replacement knobs helps maintain proper filter pressure and consistent filtration efficiency. Practical use scenarios - Seasonal maintenance: Replace worn or brittle knobs when opening your pool in spring to ensure the filter head locks securely during the swimming season. - Immediate repair: Swap a broken or missing knob to stop leaks and return the filter to normal operation without waiting for service. - Spare parts management: Keep this 9-piece set on hand for multi-filter setups, rental pools, or commercial pools to minimize downtime during routine servicing. Why choose this part - Direct fit and function for CX900G/CX900DA models avoids compatibility issues and simplifies repairs. - A complete set of nine provides value and convenience for homeowners, pool technicians, and facility managers. Installation notes - Intended for straightforward replacement; follow your pool filter manual for safe removal and reinstallation procedures. - Verify model compatibility (CX900G / CX900DA) before installation. Specifications - Part type: Locking/fastening knob (replacement) - Compatibility: CX900G pool filter; replacement for CX900DA - Quantity: 9 pieces per package - Dimensions: 15.7 cm x 6 cm - Fit: OEM-equivalent fit and function If you need reliable replacement knobs to maintain a secure, leak-free filter connection for your CX900G/CX900DA system, this 9-piece set provides the correct size and fit for efficient, hassle-free repairs and ongoing maintenance.