Pool Filter Lab

Cartridge record

Unicel C-4637

Also sold asPleatco PRB37-INFilbur FC-2380OnCore OC-513JOEM 111793OEM M-4336OEM R173430

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"
Length13-5/16"
Source values
  • unicel 13-5/16"
  • pleatco 13-5/16"
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 area37 sq ft
Source values
  • unicel 37
  • pleatco 37
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
UnicelC-4637cross-checked against 3 sources
PleatcoPRB37-INcross-checked against 2 sources
FilburFC-2380single-source
OnCoreOC-513Jsingle-source
OEM111793single-source
OEMM-4336single-source
OEMR173430single-source

Known equipment fits

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

Filter and spa fitments
BrandModelOEM partSource
Acryx-Maax Spas (Canada)——unicel single-source
Acryx-Maax SpasRainbow Dynamic 37—pleatco single-source
Aristocrat, FranklinConcord, Patriot, Ambassador,—unicel single-source
Dynamic Series IV - DFM,DFMLDynamic Series I RDC-25R173430unicel single-source
Dynamic Series IV - DFM,DFMLDynamic Series I RDC-25S—unicel single-source
Dynamic Series IV - DFM,DFMLDynamic Series II & III RTL/RCF-25—unicel single-source
Dynamic Series IV - DFM,DFMLDynamic Series IV - DFM,DFML—unicel single-source
Freedom SpasRainbow Dynamic 37—pleatco single-source
Leisure Bay/Rec WarehouseRainbow Dynamic 37—pleatco single-source
Morgan SpasRainbow Dynamic 37—pleatco single-source
Morgan Spas——unicel single-source
Pentair Pool Products / Rainbow PlasticsRainbow Dynamic 37—pleatco single-source
Phoenix SpasRainbow Dynamic 37—pleatco single-source
Rainbow——unicel single-source
Rec Warehouse—111793unicel single-source
Rec Warehouse—M-4336unicel 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.

4CH-926

4-15/16" × 13-1/2"

single-source

4CH-949

4-15/16" × 13-1/2"

cross-checked against 2 sources

C-4311

4-15/16" × 12-1/4"

cross-checked against 2 sources

C-4308

4-15/16" × 14-9/16"

cross-checked against 2 sources

C-4332

4-15/16" × 11-7/8"

cross-checked against 2 sources

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