Pool Filter Lab

Cartridge record

Unicel C-6603

single-source

Verified specifications

The selected value is shown first. Expand any row to compare the source values retained by the dataset.

Cartridge specifications
Outside diameter6"
Source values
  • unicel 6"
Length14-3/4"
Source values
  • unicel 14-3/4"
Top cap/ semi-circular handle
Source values
  • unicel / semi-circular handle
Bottom cap1-7/8" / open w/ slots
Source values
  • unicel 1-7/8" / open w/ slots
Pleats101
Source values
  • unicel 101
Filter area35 sq ft
Source values
  • unicel 35
Media weight4 oz
Source values
  • unicel 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-6603single-source

Known equipment fits

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

Filter and spa fitments
BrandModelOEM partSource
Four Seasons——unicel single-source

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-6350

6" × 14"

single-source

C-6355

6" × 14"

single-source

6CH-945

6" × 13-1/2"

single-source

6CH-50

6" × 13-7/16"

cross-checked against 3 sources

C-6602

6" × 16-1/8"

cross-checked against 2 sources

This is a single-source record. Measure the cartridge before ordering.

Find this cartridge

Outbound retailer searches are provided for convenience; Pool Filter Lab is not the seller.