Unicel 18" Complete DE Filter Grid Set, 36 sq. ft. | FS-2003
Unicel Filter Cartridges and DE Grids

Unicel 18" Complete DE Filter Grid Set, 36 sq. ft. | FS-2003

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SKU:
FS-2003

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About This Item

The Unicel FS-2003 is a complete replacement DE filter grid set for 36 square foot filter systems. This set includes everything required for a full filter re-grid in one order — precision-engineered Unicel grids built for exact manifold fit, long service life, and reliable pressure performance in residential DE filtration systems.

📦 Complete DE Filter Grid Set — 8 Grids Included
This set includes all grids needed for one complete filter re-grid: 7 full grids (FG-1003) + 1 partial grid (PG-1903). One set = one complete filter service.

Specifications

Unicel Part Number FS-2003
Filter System Area 36 sq. ft. (total system)
Set Composition 7 full grids (FG-1003) + 1 partial grid (PG-1903)
Grid Length 18" (measured end-to-end; collar not included in measurement)
Collar Configuration Open slot (2 notches)
Material High-grade DE filter fabric with reinforced seaming

Note from Unicel: Collar has open slot (2 notches). Length is measured from one end of the grid to the other — collar not included in measurement. Measure your existing grids end-to-end (excluding the collar) to verify fit before ordering.

Pro Tips

  • Verify your grid length before ordering: Measure your old grids from end-to-end, excluding the collar. Confirm the open slot (2-notch) collar style matches your filter manifold.
  • Replace all grids at once: Replacing the full set together ensures even pressure distribution and prevents premature failure of older grids left in service.
  • Safety first: Always turn off the pump and release all pressure from the filter tank via the air relief valve before opening the tank to replace grids.
  • Inspect on reassembly: Check the tank o-ring and manifold assembly for wear or cracking before sealing the tank and returning the system to service.

Also known as: FS2003

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Unicel Filter Cartridges and DE Grids

About Unicel Filter Cartridges and DE Grids

The "Gold Standard" of Replacement Cartridges
For over 50 years, Unicel (Meissner Mfg.) has been the professional's choice for restoring pool water clarity. While generic "knock-off" filters often use cheap, fuzzy fabric that clogs quickly, Unicel uses genuine Reemay® Filtration Media. This patented synthetic fiber features a unique trilobal shape that traps significantly more dirt and oils without choking your pump's water flow. Based in California, Unicel doesn't just copy filter dimensions; they engineer them to strict Original Equipment Manufacturer (OEM) specifications. This ensures a "lock-tight" fit in your filter tank, preventing debris from bypassing the system and returning to your pool.

Why We Trust Unicel Filter Cartridges and DE Grids
Genuine Reemay® Media: Uses continuous trilobal fibers to capture microscopic debris without restricting water flow.

Precision "Exact Fit": Engineered to match your tank's original specifications for a 100% leak-free seal.

Made in the USA: Manufactured in California with heavy-duty urethane end caps that resist cracking under pressure.

Longer Lifespan: Sharp, rigid pleats resist collapsing during cleaning, meaning you buy fewer replacements over time.

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