Pentair ST35DE Grid [13-1/8" x 6-1/2"] [4 Required] (191321) delozone Useful when replacing a leaking

Useful when replacing a leaking or hard-to-operate original valve

Reliable circulation motors ensure consistent water movement

Complete retrofit control system for compatible Balboa VS510SZ and BP7 spa applications

this filter cartridge helps support cleaner water and more dependable ongoing filtration performance

When a suction opening looks tired or compromised

Pentair ST35DE Grid [13-1/8" x 6-1/2"] [4 Required] (191321) delozone Useful when replacing a leakingThe Pentair 191321 ST35DE grid is designed for compatible ST35DE filter applications and measures approximately 13 1 8 inches by 6 1 2 inches. This grid is one of the internal filtering elements in the assembly, and four are required for the complete set. Replacement is often needed when an original grid is torn, worn, or no longer suitable for reinstalling during filter service. Using the correct size grid helps maintain better internal fit and can