Description
Meet the Filbur Rectangular Diatomaceous Earth (DE) Grid, FC-9840—the OEM-grade replacement grid engineered for spa and pool filtration. Measuring 18" x 15-3/16" with a center port, this rectangular DE grid delivers precise DE distribution for consistently clear water and easier maintenance in high-demand filtration systems.
Why this grid stands out
- Robust center-frame design—extruded PVC center cores provide even stress distribution and prevent warping under heavy debris loads, helping your filter maintain steady performance over more seasons.
- Antimicrobial-ready construction—critical contact points are treated to resist odor-causing bacteria and mold, extending grid life in challenging spa and pool environments.
- Integrated fittings for simple installation—end connections are molded into the grid, reducing setup steps and eliminating the need for separate adapters that can impede flow.
- Wider, break-resistant frame members—designed to keep the grid sections aligned and evenly spaced, minimizing flutter and ensuring consistent filtration even in turbulent flow.
- Clear part identification—embossed part numbers on the grid help with fast replacement and reordering, so you stay in filtration flow with minimal downtime.
- Engineered for salt and chlorine resilience—the grid—and its critical components—are formulated to withstand common pool sanitizers, keeping you on a reliable maintenance schedule.
What it means for your water and your wallet
- Precise DE distribution translates to deeper dirt removal and more stable water clarity, so you spend less time backwashing and more time swimming.
- Longer service life—reinforced construction and antimicrobial features help resist wear, reducing replacement frequency compared with non-OEM grids.
- Consistent flow—the grid’s design maintains open channels and reduces clogging, which supports efficient backwash cycles and energy savings.
Ideal use scenarios
- Replacement for aging DE grids in standard spa and pool filtration setups that accept 18" x 15-3/16" rectangles with a center port.
- Upgrading to OEM-grade components for improved reliability in high-use environments, saltwater pools, or chlorine-intensive systems.
- Maintenance refresh after seasonal shutdowns to restore filtration efficiency without redesigning your housing.
Practical tips for installation and care
- Before installing FC-9840, inspect the grid for any transport damage and ensure the center port aligns with your housing’s flow path.
- Rinse the grid with clean water to remove any packaging dust or fine debris, then insert it in the correct orientation to maintain optimal DE coating distribution.
- Periodically inspect for signs of wear, warping, or cracking; replace the grid if you notice reduced flow or visible damage.
- When performing routine maintenance, use manufacturer-recommended cleaning methods to preserve the antimicrobial features and frame integrity.
In short, the Filbur FC-9840 Rectangular DE Grid combines durable construction, built-in installation features, and chlorine/salt resilience to deliver dependable filtration performance day after day. If you’re seeking an OEM-grade replacement that simplifies upkeep while optimizing water clarity, this grid is a precise fit for your 18" x 15-3/16" DE filtration system with a center port.