Pool Filter Lab

Cartridge record

Unicel C-9421

Also sold asOEM A0558902

single-source

Verified specifications

The selected value is shown first. Expand any row to compare the source values retained by the dataset.

Cartridge specifications
Outside diameter10-5/8"
Source values
  • unicel 10-5/8"
Length28"
Source values
  • unicel 28"
Top cap5-15/16" / open w/ step
Source values
  • unicel 5-15/16" / open w/ step
Bottom cap5-15/16" / open w/ step
Source values
  • unicel 5-15/16" / open w/ step
Pleats254
Source values
  • unicel 254
Filter area200 sq ft
Source values
  • unicel 200
Media weight4 oz
Source values
  • unicel 4

Equivalent part numbers

Match the complete printed string. Similar-looking part numbers can describe different end caps or lengths.

Cross-reference equivalents
BrandPart numberVerification
UnicelC-9421single-source
OEMA0558902single-source

Known equipment fits

Fitments are source-attributed. Confirm the housing model and cartridge measurements before ordering.

Filter and spa fitments
BrandModelOEM partSource
JandyCJ200A0558902unicel single-source

Browse related equipment

Dimension neighbors

Records with the same outside diameter and a different length appear first, followed by the closest diameters. End-cap details still need to match.

C-9422

10-5/8" × 34"

single-source

C-9442

10-5/16" × 28-3/16"

cross-checked against 2 sources

C-9441

10-5/16" × 23-5/16"

cross-checked against 2 sources

C-9440

10-5/16" × 19-5/8"

cross-checked against 2 sources

C-9494

11" × 25-3/16"

single-source

This is a single-source record. Measure the cartridge before ordering.

Find this cartridge

Outbound retailer searches are provided for convenience; Pool Filter Lab is not the seller.