Pool Filter Lab

Cartridge record

Unicel 4CH-15

Also sold asOEM 817-0020OEM thread

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 diameter4-5/8"
Source values
  • unicel 4-5/8"
Length5-3/16"
Source values
  • unicel 5-3/16"
Top cap/ dual bar handle
Source values
  • unicel / dual bar handle
Bottom cap/ injection molded 1-1/2" SAE thread
Source values
  • unicel / injection molded 1-1/2" SAE thread
Pleats199
Source values
  • unicel 199
Filter area15 sq ft
Source values
  • unicel 15
Media weight3 oz
Source values
  • unicel 3

Equivalent part numbers

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

Cross-reference equivalents
BrandPart numberVerification
Unicel4CH-15single-source
OEM817-0020single-source
OEMthreadsingle-source

Known equipment fits

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

Filter and spa fitments
BrandModelOEM partSource
Unicel15 sq.ft. skim filterthreadunicel single-source
Waterway Plastics—817-0020unicel single-source
Waterway Plastics—threadunicel 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.

4CH-19

4-5/8" × 4-5/8"

cross-checked against 3 sources

C-4302

4-5/8" × 4-5/8"

cross-checked against 2 sources

C-4314AM

4-5/8" × 6"

single-source

4CH-20

4-5/8" × 6-3/4"

cross-checked against 3 sources

4CH-920

4-5/8" × 6-3/4"

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.