Pleatco PTL47W-P4 = Unicel 6CH-47 = Filbur FC-0315
47 sq ft hot tub filter, 6" diameter × 8-1/2" long. Top: Handle · Bottom: 1-1/2" MPT. Pleatco application: Advanced/LA Spas; Aber Hottub.
Interchangeable cartridges
- Unicel 6CH-47 confirmed by: Pleatco p.47 (Unicel to Pleatco cross reference) Unicel p.12 (Cartridges by series (dimensional listing))
- Filbur FC-0315 confirmed by: Pleatco p.48 (Filbur to Pleatco cross reference) Filbur p.34 (Reverse cross reference (Unicel to Filbur)) Filbur p.10 (Dimensional cartridge listing)
Check before you order
- Unicel 6CH-47 lists length 9-1/8" vs 8-1/2"; measure before ordering.
- Filbur FC-0315 lists length 9" vs 8-1/2"; measure before ordering.
- Filbur FC-0315 rates it 50 sq ft (vs 47 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 PTL47W-P4 source | Unicel 6CH-47 source | Filbur FC-0315 source |
|---|---|---|---|
| Outside diameter | 6" | 6" | 6" |
| Length | 8-1/2" | 9-1/8" | 9" |
| Top end | Handle | / semi-circular handle | Handle |
| Bottom end | 1-1/2" MPT | / 1-1/2" male thread/MPT | 1-1/2" MPT |
| Filter area | 47 sq ft | 47 sq ft | 50 sq ft |
| Pleats | not listed | 225 | not listed |
| Media weight | 3 oz/yd² | 3 oz/yd² | not listed |
Where to buy
Search any retailer for 6CH-47 or PTL47W-P4 or FC-0315. 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 |
|---|---|
03FIL1500 | Pleatco p.33: OEM part # column |
373043 | Unicel p.59: OEM cross reference: Sundance 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.
FAQ
What is the Unicel equivalent of Pleatco PTL47W-P4?
The catalogs cross-reference Pleatco PTL47W-P4 to Unicel 6CH-47.
What is the Filbur equivalent of Pleatco PTL47W-P4?
The catalogs list Filbur FC-0315.
What size is the PTL47W-P4 filter?
Pleatco lists PTL47W-P4 as 6" outside diameter by 8-1/2" long, top: Handle, bottom: 1-1/2" MPT, 47 sq ft.
Which OEM part numbers does it replace?
Listed OEM numbers: 03FIL1500, 373043.
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.