Pool Filter Lab

Cartridge record

Unicel C-6620

Also sold asPleatco PMS20Filbur FC-3840OEM A3821OEM FD-20OEM FD-40OEM FE-20

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 diameter6-1/4"
Source values
  • unicel 6-1/4"
  • pleatco 6-1/4"
Length8"
Source values
  • unicel 8"
  • pleatco 8"
Top cap2-5/8" / open
Source values
  • unicel 2-5/8" / open
  • pleatco 2 5/8
Bottom cap2-5/8" / open
Source values
  • unicel 2-5/8" / open
  • pleatco 2 5/8
Pleats146
Source values
  • unicel 146
Filter area20 sq ft
Source values
  • unicel 20
  • 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-6620cross-checked against 2 sources
PleatcoPMS20single-source
FilburFC-3840single-source
OEMA3821single-source
OEMFD-20single-source
OEMFD-40single-source
OEMFE-20single-source

Known equipment fits

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

Filter and spa fitments
BrandModelOEM partSource
MuskinA3821—unicel single-source
MuskinFD-20—unicel single-source
MuskinFD-40—unicel single-source
MuskinFE-20—unicel single-source
MuskinMuskin 20—pleatco 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-6950

6-1/4" × 19-5/8"

single-source

C-6960

6-1/4" × 20-3/4"

single-source

C-6970

6-1/4" × 25-1/2"

single-source

C-6980

6-1/4" × 26-3/4"

single-source

C-6900

6-1/4" × 32-3/4"

single-source

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