Pool Filter Lab

Cartridge record

Unicel C-8449

Also sold asOEM 18218RO100

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 diameter8-15/16"
Source values
  • unicel 8-15/16"
Length10-1/4"
Source values
  • unicel 10-1/4"
Top cap3-3/4" / open
Source values
  • unicel 3-3/4" / open
Bottom cap3-3/4" / open
Source values
  • unicel 3-3/4" / open
Pleats162
Source values
  • unicel 162
Filter area50 sq ft
Source values
  • unicel 50
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-8449single-source
OEM18218RO100single-source

Known equipment fits

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

Filter and spa fitments
BrandModelOEM partSource
Astral2505 CE Terra18218RO100unicel 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-8448

8-15/16" × 10-1/16"

single-source

C-8474

8-15/16" × 15"

cross-checked against 2 sources

C-900

8-15/16" × 17-3/8"

single-source

C-8311

8-15/16" × 17-3/8"

cross-checked against 3 sources

C-8409

8-15/16" × 17-3/8"

cross-checked against 3 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.