Cartridge record

Unicel C-4351

Name: Unicel C-4351 filter cartridge
Brand: Unicel
SKU: C-4351

Also sold asPleatco PIC50Pleatco PIC50NFilbur FC-0184OEM 179192

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 diameter	4-1/4" Source values unicel 4-1/4" pleatco 4-3/8"
Length	23-3/4" Source values unicel 23-3/4" pleatco 19-13/16"
Top cap	/ semi-circular handle Source values unicel / semi-circular handle pleatco Handle
Bottom cap	2-5/16" / open w/ molded o-ring Source values unicel 2-5/16" / open w/ molded o-ring pleatco 2 1/16
Pleats	202 Source values unicel 202
Filter area	50 sq ft Source values unicel 50 pleatco 50
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	C-4351	cross-checked against 2 sources
Pleatco	PIC50	single-source
Pleatco	PIC50N	single-source
Filbur	FC-0184	single-source
OEM	179192	single-source

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

Filter and spa fitments
Brand	Model	OEM part	Source
Icon / Keyes Spas	Icon 50 sq. ft.	—	pleatco single-source
Icon / Keyes Spas	Icon 50	—	pleatco single-source
Icon Spas	Image Spa Model # 615	—	unicel single-source
Icon Spas	Image Spa Model # 616	—	unicel single-source
Icon Spas	Image Spa Model # 631	179192	unicel single-source
Icon Spas	Weslo Spa Model # 628	—	unicel single-source

Records with the same outside diameter and a different length appear first, followed by the closest diameters. End-cap details still need to match.

4-1/4" × 17-7/8"

4-1/4" × 12"

4-1/4" × 10-7/8"

4-1/4" × 8"

4-1/4" × 8"

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