Pool Filter Lab

Cartridge record

Unicel 6CH-50

Also sold asPleatco PTL50W-SV-PPleatco PTL50W-SV-P4Filbur FC-0340OnCore OC-613A

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 diameter6"
Source values
  • unicel 6"
  • pleatco 6"
Length13-7/16"
Source values
  • unicel 13-7/16"
  • pleatco 13-1/8"
Top cap/ semi-circular handle
Source values
  • unicel / semi-circular handle
  • pleatco Handle
Bottom cap/ 1-1/2” male thread/MPT
Source values
  • unicel / 1-1/2” male thread/MPT
  • pleatco 1 7/8
Pleats158
Source values
  • unicel 158
Filter area50 sq ft
Source values
  • unicel 50
  • pleatco 50
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
Unicel6CH-50cross-checked against 3 sources
PleatcoPTL50W-SV-Psingle-source
PleatcoPTL50W-SV-P4single-source
FilburFC-0340single-source
OnCoreOC-613Asingle-source

Known equipment fits

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

Filter and spa fitments
BrandModelOEM partSource
Advanced Spa Design——unicel single-source
Arizona Pacific SpasAdvanced/LA Spas—pleatco single-source
Blue Pacific SpasAdvanced/LA Spas—pleatco single-source
Blue Pacific Spas——unicel single-source
Charisma SpasAdvanced/LA Spas—pleatco single-source
Charisma Spas——unicel single-source
Diamond Back Spas——unicel single-source
Esther Williams SpasAdvanced/LA Spas—pleatco single-source
Esther Williams——unicel single-source
LA Spas / Advanced Spa DesignAdvanced/LA Spas—pleatco single-source
LA Spas——unicel single-source
Unicel50 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.

6CH-945

6" × 13-1/2"

single-source

C-6350

6" × 14"

single-source

C-6355

6" × 14"

single-source

6CH-45

6" × 12-3/8"

cross-checked against 3 sources

C-6475

6" × 14-3/4"

cross-checked against 3 sources

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