Pentair Grid Assembly for the FNS Plus 36 Filter | 59023500
- In stock, ready to ship
- Backordered: contact us for ETA
- SKU:
- 59023500
-
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About This Item
The Pentair Element Grid Assembly (59023500) is the OEM replacement complete grid assembly for the Pentair FNS Plus 36 D.E. filter. This assembly restores the internal filtration surface that traps debris as pool water passes through the diatomaceous earth coating.
IMPORTANT: COMPLETE ASSEMBLY — NOT SOLD AS INDIVIDUAL GRIDS
This listing is for the complete element grid assembly as a single unit, not individual grid segments. Confirm your filter model before ordering, as grid assemblies are sized specifically to each D.E. filter's tank capacity.
⚠️ IMPORTANT: FNS PLUS 36 ONLY — NOT COMPATIBLE WITH FNS 36
This assembly fits the Pentair FNS Plus 36 filter exclusively. It is not compatible with the older Pentair FNS 36 model. Confirm your filter model before ordering.
Inside the FNS Plus 36 filter, this grid assembly provides the structural framework that D.E. powder adheres to during filtration. A cracked, warped, or torn grid assembly allows unfiltered water and D.E. powder to bypass the media, resulting in cloudy return water and reduced filtration efficiency.
Specifications
| Pentair Part Number | 59023500 |
| Part Name | Element Grid Assembly, Complete |
| Part Category | Grid Assemblies |
| Quantity Included | Each (complete assembly) |
Fits Into
| Brand | Equipment Line | Model / Part Number | Notes |
| Pentair | FNS Plus | FNS PLUS 36 | Complete element grid assembly, 36 sq. ft. filter |
Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.
Poolaroo Pro Tip
Before installing a new grid assembly, inspect the filter tank's manifold and air relief assembly for D.E. residue buildup — a common sign that the previous grid assembly failed at the seams rather than through age alone. Replacing the complete assembly rather than attempting to patch individual grid fingers ensures uniform D.E. coating and consistent filtration across the entire 36 sq. ft. surface area.
