Pleatco PCD75N = Unicel C-7375 = Filbur FC-3964
75 sq ft hot tub filter, 7" diameter × 14-7/8" long. Top: Swivel Handle · Bottom: 2-11/16" open. Pleatco application: Caldera 75 (new style).
Interchangeable cartridges
- Unicel C-7375 confirmed by: Pleatco p.47 (Unicel to Pleatco cross reference) Unicel p.16 (Cartridges by series (dimensional listing))
- Filbur FC-3964 confirmed by: Pleatco p.48 (Filbur to Pleatco cross reference) Filbur p.33 (Reverse cross reference (Unicel to Filbur)) Filbur p.11 (Dimensional cartridge listing)
Published dimensions, side by side
Each manufacturer measures a little differently. Compare these with your old cartridge.
| As published by | Pleatco PCD75N source | Unicel C-7375 source | Filbur FC-3964 source |
|---|---|---|---|
| Outside diameter | 7" | 7" | 7" |
| Length | 14-7/8" | 14-3/4" | 14-3/4" |
| Top end | Swivel Handle | / semi-circular handle | Handle |
| Bottom end | 2-11/16" open | 2-11/16" / open | 2-11/16" open |
| Filter area | 75 sq ft | 75 sq ft | 75 sq ft |
| Pleats | not listed | 216 | not listed |
| Media weight | 3 oz/yd² | 3 oz/yd² | not listed |
Where to buy
Search any retailer for C-7375 or PCD75N or FC-3964. These are the same cartridge under different brand names.
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OEM part numbers this cartridge replaces
As printed in the cited aftermarket catalogs. Match the number on your old cartridge or in your spa manual exactly.
| OEM number | Listed in |
|---|---|
1019301 | Pleatco p.33: OEM part # column Unicel p.30: OEM cross reference: Caldera Spas |
Hot tub brands that use it
From the spa-manufacturer cross reference in the Unicel 2026 Replacement Guide. A brand may use several sizes, so check your measurements.
- Caldera Spas (OEM 1019301) Unicel p.30
FAQ
What is the Unicel equivalent of Pleatco PCD75N?
The catalogs cross-reference Pleatco PCD75N to Unicel C-7375.
What is the Filbur equivalent of Pleatco PCD75N?
The catalogs list Filbur FC-3964.
What size is the PCD75N filter?
Pleatco lists PCD75N as 7" outside diameter by 14-7/8" long, top: Swivel Handle, bottom: 2-11/16" open, 75 sq ft.
Which OEM part numbers does it replace?
Listed OEM numbers: 1019301.
Sources: Filbur Product Catalog and Reference Guide (2024) · Filbur Product Catalog and Reference Guide (2024) · Pleatco 2023 Catalog & Cross Reference Guide (Pentair) · Pleatco 2023 Catalog & Cross Reference Guide (Pentair) · Pleatco 2023 Catalog & Cross Reference Guide (Pentair) · Unicel 2026 Replacement Guide. Last checked 2026-10-21.