Cartridge record

Unicel 4CH-19

Name: Unicel 4CH-19 filter cartridge
Brand: Unicel
SKU: 4CH-19

Also sold asPleatco PSG13.5Pleatco PSG13.5P4Filbur FC-0122OnCore OC-405AOEM 303575OEM FIL11100305

cross-checked against 3 sources

Verified specifications

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

Cartridge specifications
Outside diameter	4-5/8" Source values unicel 4-5/8" pleatco 4-3/4"
Length	4-5/8" Source values unicel 4-5/8" pleatco 5-15/16"
Top cap	/ molded cone handle Source values unicel / molded cone handle pleatco Handle
Bottom cap	/ 1-1/2” male thread/MPT Source values unicel / 1-1/2” male thread/MPT pleatco P4
Pleats	199 Source values unicel 199
Filter area	13 sq ft Source values unicel 13 pleatco 13.5
Media weight	3 oz Source values unicel 3 pleatco 3

Match the complete printed string. Similar-looking part numbers can describe different end caps or lengths.

Cross-reference equivalents
Brand	Part number	Verification
Unicel	4CH-19	cross-checked against 3 sources
Pleatco	PSG13.5	single-source
Pleatco	PSG13.5P4	cross-checked against 2 sources
Filbur	FC-0122	single-source
OnCore	OC-405A	single-source
OEM	303575	single-source
OEM	FIL11100305	single-source

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

Filter and spa fitments
Brand	Model	OEM part	Source
Cal Spas	—	FIL11100305	unicel single-source
Dolphin Spas	Saratoga Spas	—	pleatco single-source
Dolphin Spas	—	—	unicel single-source
Leisure Bay Spas	Saratoga Spas	—	pleatco single-source
Leisure Bay Spas	—	—	unicel single-source
Leisure Bay/Rec Warehouse	Saratoga Spas	—	pleatco single-source
Rec Warehouse	—	303575	unicel single-source
Saratoga Spas	Saratoga Spas	—	pleatco single-source
Saratoga Spas	—	—	unicel single-source
Unicel	13 sq.ft. top load	—	unicel single-source