Pool Filter Lab

Cartridge record

Unicel 4CH-30

Also sold asPleatco PTL25H-PPleatco PTL25P-4Pleatco PTL25P4Filbur FC-0141Filbur FC-3091OnCore OC-411JOEM 1561-14OEM 6540-484

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 diameter4-5/8"
Source values
  • unicel 4-5/8"
  • pleatco 4-3/4"
Length11-7/8"
Source values
  • unicel 11-7/8"
  • pleatco 11-7/8"
Top cap/ molded cone handle
Source values
  • unicel / molded cone handle
  • pleatco Handle
Bottom cap/ 1-1/2” male thread/MPT
Source values
  • unicel / 1-1/2” male thread/MPT
  • pleatco PAD AD
Pleats158
Source values
  • unicel 158
Filter area30 sq ft
Source values
  • unicel 30
  • pleatco 25
Media weight4 oz
Source values
  • unicel 4
  • pleatco 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
Unicel4CH-30cross-checked against 3 sources
PleatcoPTL25H-Psingle-source
PleatcoPTL25P-4single-source
PleatcoPTL25P4single-source
FilburFC-0141single-source
FilburFC-3091single-source
OnCoreOC-411Jsingle-source
OEM1561-14single-source
OEM6540-484single-source
OEM74407-98single-source

Known equipment fits

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

Filter and spa fitments
BrandModelOEM partSource
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
Dimension One SpasAdvanced/LA Spas—pleatco single-source
Dimension One Spas—1561-14unicel single-source
Dolphin SpasAdvanced/LA Spas—pleatco single-source
Dolphin Spas——unicel single-source
Florida Whirlpool SpasAdvanced/LA Spas—pleatco single-source
Florida Whirlpool——unicel single-source
Freedom SpasAdvanced/LA Spas—pleatco single-source
Freedom SpasFranklin, Statesman, Revere—unicel single-source
LA Spas / Advanced Spa DesignAdvanced/LA Spas—pleatco single-source
Marathon SpasAdvanced/LA Spas—pleatco single-source
Marathon Spas——unicel single-source
OPU Spas/Great Northern EngineeringAdvanced/LA Spas—pleatco single-source
OpuSpas——unicel single-source
Phoenix SpasDimension One,Top Load Pressure Filter—pleatco single-source
Saratoga SpasAdvanced/LA Spas—pleatco single-source
Saratoga Spas—74407-98unicel single-source
Seascape SpasAdvanced/LA Spas—pleatco single-source
Seascape Spas——unicel single-source
Sundance SpasAdvanced/LA Spas—pleatco single-source
Sundance Spas—6540-484unicel single-source
Unicel30 sq.ft. top load—unicel single-source

Browse related equipment

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.

4CH-950

4-5/8" × 12"

cross-checked against 2 sources

C-4327

4-5/8" × 11-5/8"

single-source

C-4327AM

4-5/8" × 11-5/8"

single-source

C-4403

4-5/8" × 11-5/8"

cross-checked against 2 sources

4CH-934

4-5/8" × 12-1/2"

single-source

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