Pool Filter Lab

Cartridge record

Unicel C-4403

Also sold asPleatco PCP20Filbur FC-3073

cross-checked against 2 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 4-15/16"
Length11-5/8"
Source values
  • unicel 11-5/8"
  • pleatco 11-13/16"
Top cap/ molded cone handle
Source values
  • unicel / molded cone handle
  • pleatco Handle
Bottom cap1-3/8" / open
Source values
  • unicel 1-3/8" / open
  • pleatco 1 1/3
Pleats143
Source values
  • unicel 143
Filter area25 sq ft
Source values
  • unicel 25
  • pleatco 20
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-4403cross-checked against 2 sources
PleatcoPCP20single-source
FilburFC-3073single-source

Known equipment fits

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

Filter and spa fitments
BrandModelOEM partSource
Nemco SpasNemco Spa—pleatco single-source
Nemco——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.

4CH-30

4-5/8" × 11-7/8"

cross-checked against 3 sources

C-4312

4-5/8" × 11-7/8"

cross-checked against 3 sources

C-4320

4-5/8" × 11-7/8"

cross-checked against 3 sources

C-4325

4-5/8" × 11-7/8"

cross-checked against 3 sources

4CH-950

4-5/8" × 12"

cross-checked against 2 sources

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