Pool Filter Lab

Cartridge record

Unicel 5CH-45

Also sold asPleatco PFF50PPleatco PFF50P4Filbur FC-2401OnCore OC-510A

cross-checked against 3 sources

Verified specifications

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

Cartridge specifications
Outside diameter5-5/16"
Source values
  • unicel 5-5/16"
  • pleatco 5-3/16"
Length10"
Source values
  • unicel 10"
  • pleatco 10-1/16"
Top cap2-1/8" / open
Source values
  • unicel 2-1/8" / open
  • pleatco 2 1/8
Bottom cap/ 1-1/2” male thread/MPT
Source values
  • unicel / 1-1/2” male thread/MPT
  • pleatco 1 7/8
Pleats225
Source values
  • unicel 225
Filter area45 sq ft
Source values
  • unicel 45
  • pleatco 45
Media weight3 oz
Source values
  • unicel 3
  • pleatco 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
Unicel5CH-45cross-checked against 3 sources
PleatcoPFF50Psingle-source
PleatcoPFF50P4single-source
FilburFC-2401single-source
OnCoreOC-510Asingle-source

Known equipment fits

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

Filter and spa fitments
BrandModelOEM partSource
Freeflow SpasLegend—pleatco single-source
RLXLegend—unicel single-source
RLXPassport—unicel single-source
Unicel45 sq.ft. top load—unicel single-source

Source notes

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-5345

5-5/16" × 10-1/8"

cross-checked against 3 sources

5CH-37

5-5/16" × 9"

cross-checked against 2 sources

C-5623

5-5/16" × 13-9/16"

single-source

C-5374

5-5/16" × 14-13/16"

cross-checked against 3 sources

C-5397

5-5/16" × 17-13/16"

cross-checked against 3 sources

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