Pleatco PCAL100 = Unicel C-4995 = Filbur FC-2940
100 sq ft hot tub filter, 5" diameter × 23-5/8" long. Top: 2-1/8" open · Bottom: 2-1/8" open. Pleatco application: Waterway 100, Cal Spas.
Interchangeable cartridges
- Unicel C-4995 confirmed by: Pleatco p.47 (Unicel to Pleatco cross reference) Unicel p.9 (Cartridges by series (dimensional listing))
- Filbur FC-2940 confirmed by: Pleatco p.48 (Filbur to Pleatco cross reference) Filbur p.33 (Reverse cross reference (Unicel to Filbur)) Filbur p.9 (Dimensional cartridge listing)
Check before you order
- Unicel C-4995 rates it 95 sq ft (vs 100 sq ft); filter area ratings differ by maker.
- Filbur FC-2940 rates it 95 sq ft (vs 100 sq ft); filter area ratings differ by maker.
Published dimensions, side by side
Each manufacturer measures a little differently. Compare these with your old cartridge.
| As published by | Pleatco PCAL100 source | Unicel C-4995 source | Filbur FC-2940 source |
|---|---|---|---|
| Outside diameter | 5" | 4-15/16" | 4-15/16" |
| Length | 23-5/8" | 23-5/8" | 23-5/8" |
| Top end | 2-1/8" open | 2-1/8" / open | 2-1/8" open |
| Bottom end | 2-1/8" open | 2-1/8" / open | 2-1/8" open |
| Filter area | 100 sq ft | 95 sq ft | 95 sq ft |
| Pleats | not listed | 222 | not listed |
| Media weight | 3 oz/yd² | 3 oz/yd² | not listed |
Where to buy
Search any retailer for C-4995 or PCAL100 or FC-2940. 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 |
|---|---|
817-1000 | Pleatco p.32: OEM part # column Unicel p.64: OEM cross reference: Waterway Plastics |
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.
- Acryx-Maax Spas (Canada) Unicel p.26
- Cal Spas Unicel p.30
- Coast Spas (Canada) Unicel p.31
- J.E.M. Spas Unicel p.41
- QCA Unicel p.53
- Waterway Plastics (models: Top load (in-line) 95 sq.ft.; OEM 817-1000) Unicel p.64
FAQ
What is the Unicel equivalent of Pleatco PCAL100?
The catalogs cross-reference Pleatco PCAL100 to Unicel C-4995.
What is the Filbur equivalent of Pleatco PCAL100?
The catalogs list Filbur FC-2940.
What size is the PCAL100 filter?
Pleatco lists PCAL100 as 5" outside diameter by 23-5/8" long, top: 2-1/8" open, bottom: 2-1/8" open, 100 sq ft.
Which OEM part numbers does it replace?
Listed OEM numbers: 817-1000.
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.