Ensure optimal filtration for your in-ground pool system with the AC-19313 Replacement Filter Cartridge, designed to fit the Black Diamond 425 Quad Cartridge Filter Tank. This precision-made element is one of four identical filters required for the BD-425 system, providing thorough, high-capacity water filtration across all four chambers.

Manufactured by Hydromatic and branded under Black Diamond Cartridge Technologies, the AC-19313 delivers exceptional durability and performance. The pleated filtration media offers maximum surface area to trap fine particles, dirt, oils, and debris—helping maintain sparkling, sanitized water throughout the swim season. Each cartridge is constructed with rugged end caps and a rigid core to prevent collapse under pressure.

Compatible System:
- Black Diamond 425 Quad Cartridge Filter Tank (In-Ground Pools)
- Requires 4 total cartridges (sold individually)

Specifications (Per Cartridge):
- Height: 25 3/5" (25.6")
- Diameter: 6 8/9" (6.89")
- Model: AC-19313
- Fits Tank Size: 43

• OEM-grade replacement for BD-425 filter systems
• High-efficiency pleated filter media ensures maximum dirt-holding capacity
• Chemical- and pressure-resistant design for long-lasting use
• Maintains flow rates and protects pump from excessive strain
• Easy to install and clean for hassle-free maintenance

Restore your pool’s performance with the AC-19313 Replacement Cartridge—essential for the reliable operation of your Black Diamond 425 filter system. For complete system function, be sure to replace all four cartridges as needed.