Unicel C-5396 Replacement Filter Cartridge for Waterway Top-Load & Coast Spas | 100 Sq. Ft. | 21 5/16"
- In stock, ready to ship
- SKU:
- C-5396
-
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About This Item
The Unicel C-5396 is a 5000 Series 100 sq. ft. replacement filter cartridge engineered for Waterway Plastics top-load in-line spa filters. With 222 precision-cut pleats of 3 oz. Reemay® 2033 polyester media packed into a 21 5/16" body, this cartridge delivers maximum filtration surface area in a compact diameter — keeping your spa water consistently clear between service intervals.
⚠️ IMPORTANT: VERIFY YOUR DIMENSIONS BEFORE ORDERING
Coast Spas compatibility is based on Unicel's OEM records; no specific model number or OEM part number is on file for this brand. If you own a Coast Spas hot tub, do not order based on brand name alone. Measure your existing cartridge and confirm it matches: 21 5/16" length × 5 5/16" outer diameter × 2 1/8" inner diameter before purchasing.
Specifications
| Filter Area | 100 sq. ft. |
| Length | 21 5/16" |
| Outer Diameter | 5 5/16" |
| Top Inner Diameter | 2 1/8" |
| Bottom Inner Diameter | 2 1/8" |
| Material | 3 oz. Reemay® 2033 |
| Pleat Count | 222 |
|
Top Cap: Open
|
Bottom Cap: Open
|
Fits Into:
| OEM Brand | Product Name | Part Number | Notes |
| Coast Spas (Canada) | — | — | Verify dimensions before ordering — see callout above |
| Waterway Plastics | Top Load (In-Line) 100 sq. ft. | 817-0098 | — |
(This is not an exhaustive list.)
Pro Tip: The Unicel 5000 Series 5 5/16" outer diameter is narrower than the more common 4 5/8" or 7" cartridges — measure your existing filter carefully before ordering. Use the three key dimensions: 21 5/16" length, 5 5/16" outer diameter, and 2 1/8" inner diameter. If your filter housing has a Waterway label and the original cartridge shows part number 817-0098, the C-5396 is your confirmed replacement.
Also known as: C5396
