Unicel C-9402 Replacement Filter Cartridge | 100 sq. ft. | Waterway Clearwater

The Unicel C-9402 is a 9000 Series 100 sq. ft. replacement filter cartridge engineered for Waterway Clearwater filter systems. Constructed with heavy-duty 4 oz. Reemay 2040 polyester media — heavier than standard 3 oz. media — it delivers superior dirt-holding capacity and extended service life. With 192 precisely engineered pleats providing the full 100 sq. ft. of filtration area, expect longer cleaning cycles and consistently cleaner water.

⚠️ IMPORTANT: NO CENTER CORE — VERIFY HOUSING COMPATIBILITY
This cartridge features an open top and open bottom (coreless) design. It is engineered for filter housings that retain the cartridge via an internal manifold and base plate — no center post or standpipe is used. Confirm your filter housing is compatible before ordering.

Specifications

Filter Area	100 sq. ft.
Length	19 5/16"
Outer Diameter	9 15/16"
Top Inner Diameter	5 13/16"
Bottom Inner Diameter	6 1/16"
Material	4 oz. Reemay 2040
Pleat Count	192
Top Cap: Open	Bottom Cap: Open

Note from Unicel: This product has no center core.

Fits Into:

(This is not an exhaustive list.)

Pro Tip: Before ordering, verify your existing cartridge measures approximately 19 5/16" in length and 9 15/16" in outer diameter. Confirm your housing uses an open-ended, coreless cartridge design — if your current filter has a center standpipe or post, this cartridge is not compatible. The 4 oz. Reemay 2040 media is UV- and chemical-resistant; store unused cartridges in a cool, dry location away from direct sunlight.

Also known as: C9402