Pentair ST35DE Grid [13-1/8" x 6-1/2"] [4 Required] (191321) chemicalfeeders Useful when future removal or

Useful when future removal or maintenance access is needed

The 3/4 inch size and 1/2 pound water-service design give this valve practical value because check valves work best when the replacement matches the original plumbing dimensions and operating characteristics closely

When safety-related support parts begin to fail

That combination makes this assembly especially practical in applications where the owner needs both stronger heat performance and a cleaner installation match

That makes the repair more focused and efficient

Pentair ST35DE Grid [13-1/8" x 6-1/2"] [4 Required] (191321) chemicalfeeders Useful when future removal orThe 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