Pool Filter Lab

Cartridge record

Unicel C-4405

Also sold asPleatco PRB25SF-JH-Pleatco PRB25SF-JH-PAIRPleatco PRB25SF-PAIRFilbur FC-2387OnCore OC-506BOEM 17-2464OEM 817-5010OEM 3005825

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 diameter4-15/16"
Source values
  • unicel 4-15/16"
  • pleatco 5"
Length6-5/8"
Source values
  • unicel 6-5/8"
  • pleatco 6-5/8"
Top cap2-1/8" / open
Source values
  • unicel 2-1/8" / open
  • pleatco 2 1/8
Bottom cap2-1/8" / open
Source values
  • unicel 2-1/8" / open
  • pleatco 2 1/8
Pleats158
Source values
  • unicel 158
Filter area50 sq ft
Source values
  • unicel 50
  • pleatco 50
Media weight4 oz
Source values
  • unicel 4
  • 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
UnicelC-4405cross-checked against 3 sources
PleatcoPRB25SF-JH-single-source
PleatcoPRB25SF-JH-PAIRsingle-source
PleatcoPRB25SF-PAIRsingle-source
FilburFC-2387single-source
OnCoreOC-506Bsingle-source
OEM17-2464single-source
OEM817-5010single-source
OEM3005825single-source
OEMR173433single-source

Known equipment fits

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

Filter and spa fitments
BrandModelOEM partSource
Aristocrat, Franklin——unicel single-source
Arizona Pacific SpasRainbow DSF 50—pleatco single-source
Beachcomber SpasRainbow DSF 50—pleatco single-source
Beachcomber—3005825unicel single-source
Canspa Mfg. (Canada)——unicel single-source
Catalina / Caribbean SpasRainbow DSF 50—pleatco single-source
Catalina Spas——unicel single-source
Clearwater SpasRainbow DSF 50—pleatco single-source
Clearwater Spas——unicel single-source
Diamond Back Spas——unicel single-source
Discovery SpasRainbow DSF 50—pleatco single-source
Discovery Spas——unicel single-source
Dynamic Series II & III - RTL/RCFDynamic Series IV - DFML-25C—unicel single-source
Dynamic Series II & III - RTL/RCFDynamic Series IV - Model DSF17-2464unicel single-source
Dynamic Series IV - DFM,DFMLDynamic Series IV - DFML-25C—unicel single-source
Dynamic Series IV - DFM,DFMLDynamic Series IV - Model DSFR173433unicel single-source
Freedom SpasRainbow DSF 50—pleatco single-source
Grecian Spas/Discovery SpasRainbow DSF 50—pleatco single-source
LA Spas / Advanced Spa DesignRainbow DSF 50—pleatco single-source
Legend Spas——unicel single-source
Lifestyle Spas (Canada)Rainbow DSF 50—pleatco single-source
Lifestyle Spas (Canada)——unicel single-source
Maax Spas (Canada) / Coleman SpasRainbow DSF 50—pleatco single-source
Marquis Spas——unicel single-source
Moose Mountain Spas (Canada)——unicel single-source
Moose Mountain SpasRainbow DSF 50—pleatco single-source
Pentair Pool Products / Rainbow PlasticsRainbow DSF 50—pleatco single-source
RainbowDSF-50—unicel single-source
Signature SpasRainbow DSF 50—pleatco single-source
Signature Spas——unicel single-source
Sundance SpasRainbow DSF 50—pleatco single-source
Sunrise SpasRainbow DSF 50—pleatco single-source
Sunrise Spas——unicel single-source
Thermo Spas of Connecticut——unicel single-source
Thermo SpasRainbow DSF 50—pleatco single-source
US Tooling & Spa——unicel single-source
Us Tooling & SpasRainbow DSF 50—pleatco single-source
Waterway PlasticsRainbow DSF 50—pleatco single-source
Waterway PlasticsSkim filter817-5010unicel single-source
Waterway Plastics——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.

C-4316

4-15/16" × 5-1/2"

single-source

C-4401

4-15/16" × 4-5/8"

cross-checked against 3 sources

4CH-935

4-15/16" × 9-1/4"

cross-checked against 2 sources

C-4335

4-15/16" × 9-1/4"

cross-checked against 3 sources

C-4328

4-15/16" × 9-13/16"

single-source

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