Pool Filter Lab

Cartridge record

Unicel C-7685

Also sold asPleatco RC-PH100/105Filbur FC-6110OEM ST/TC 105

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 diameter7-1/2"
Source values
  • unicel 7-1/2"
  • pleatco 7-7/8"
Length19-1/2"
Source values
  • unicel 19-1/2"
  • pleatco 18-1/16"
Top cap/ 3-1/2" female thread/FPT
Source values
  • unicel / 3-1/2" female thread/FPT
  • pleatco 3 1/2 FPT
Bottom cap2-5/8" / open
Source values
  • unicel 2-5/8" / open
  • pleatco 2 5/8
Pleats205
Source values
  • unicel 205
Filter area105 sq ft
Source values
  • unicel 105
  • pleatco 105
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-7685cross-checked against 2 sources
PleatcoRC-PH100/105single-source
FilburFC-6110single-source
OEMST/TC 105single-source

Known equipment fits

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

Filter and spa fitments
BrandModelOEM partSource
HarmscoFilter Model BF105ST/TC 105unicel single-source
HarmscoHarmsco RC Single Element Cartridge—pleatco 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.

C-7418

7-1/2" × 20-13/16"

cross-checked against 2 sources

C-7370

7-1/2" × 17-3/4"

single-source

C-7419

7-1/2" × 21-7/8"

cross-checked against 2 sources

C-7674

7-1/2" × 15-3/16"

cross-checked against 2 sources

C-7415

7-1/2" × 14-13/16"

cross-checked against 2 sources

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