Pool Filter Lab

Cartridge record

Unicel C-4401

Also sold asPleatco PRB17.5SF-JH-Pleatco PRB17.5SF-JH-PAIRPleatco PRB17.5SF-PAIRFilbur FC-2386OnCore OC-504AOEM 17-2606OEM 817-3510OEM 6000-134

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"
Length4-5/8"
Source values
  • unicel 4-5/8"
  • pleatco 4-5/8"
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 area35 sq ft
Source values
  • unicel 35
  • pleatco 35
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-4401cross-checked against 3 sources
PleatcoPRB17.5SF-JH-single-source
PleatcoPRB17.5SF-JH-PAIRsingle-source
PleatcoPRB17.5SF-PAIRsingle-source
FilburFC-2386single-source
OnCoreOC-504Asingle-source
OEM17-2606single-source
OEM817-3510single-source
OEM6000-134single-source
OEM3005820single-source
OEMR173432single-source

Known equipment fits

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

Filter and spa fitments
BrandModelOEM partSource
Apollo SpasRainbow DSF 35—pleatco single-source
Apollo Spas——unicel single-source
Aqua Tech SpasRainbow DSF 35—pleatco single-source
Aqua Tech Spas——unicel single-source
Aristocrat, FranklinLiberty—unicel single-source
Arizona Pacific SpasRainbow DSF 35—pleatco single-source
Beachcomber SpasRainbow DSF 35—pleatco single-source
Beachcomber—3005820unicel single-source
Canspa Manufacturing (Canada)Rainbow DSF 35—pleatco single-source
Canspa Mfg. (Canada)——unicel single-source
Catalina / Caribbean SpasRainbow DSF 35—pleatco single-source
Catalina Spas——unicel single-source
Clearwater SpasRainbow DSF 35—pleatco single-source
Clearwater Spas——unicel single-source
Del Sol Hermosa—6000-134unicel single-source
Diamond Back Spas——unicel single-source
Discovery SpasRainbow DSF 35—pleatco single-source
Discovery Spas——unicel single-source
Dynamic Series II & III - RTL/RCFDynamic Series IV - Model DSF17-2606unicel single-source
Dynamic Series IV - DFM,DFMLDynamic Series IV - Model DSFR173432unicel single-source
Dynasty SpasRainbow DSF 35—pleatco single-source
Dynasty Spas——unicel single-source
Esther Williams SpasRainbow DSF 35—pleatco single-source
Esther Williams——unicel single-source
Freedom SpasRainbow DSF 35—pleatco single-source
Gatsby SpasRainbow DSF 35—pleatco single-source
Grecian Spas/Discovery SpasRainbow DSF 35—pleatco single-source
Hydro SpaRainbow DSF 35—pleatco single-source
Hydro Spa——unicel single-source
LA Spas / Advanced Spa DesignRainbow DSF 35—pleatco single-source
Legend Spas——unicel single-source
Lifestyle Spas (Canada)Rainbow DSF 35—pleatco single-source
Lifestyle Spas (Canada)——unicel single-source
Maax Spas (Canada) / Coleman SpasRainbow DSF 35—pleatco single-source
PDC SpasRainbow DSF 35—pleatco single-source
PDC Spas——unicel single-source
Pentair Pool Products / Rainbow PlasticsRainbow DSF 35—pleatco single-source
RainbowDSF-35—unicel single-source
Sundance SpasRainbow DSF 35—pleatco single-source
Thermo Spas of Connecticut——unicel single-source
Thermo SpasRainbow DSF 35—pleatco single-source
Waterway PlasticsRainbow DSF 35—pleatco single-source
Waterway PlasticsSkim filter817-3510unicel 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

4CH-22

4-15/16" × 6-5/8"

cross-checked against 2 sources

4CH-23

4-15/16" × 6-5/8"

cross-checked against 3 sources

C-4405

4-15/16" × 6-5/8"

cross-checked against 3 sources

4CH-935

4-15/16" × 9-1/4"

cross-checked against 2 sources

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