Why it matters
The Optimum Pool Technologies OPT-320 Pool Filter Cartridge is a replacement pool filter cartridge that its listing says replaces Pentair, with 80 sq ft of media.
Match the part number on your old cartridge or filter housing first; if it has worn off, measure length, outside diameter and both center holes. A cartridge that is close but not exact can let dirty water bypass its seals.
The listing gives dimensions of 7 inD x 7 inW x 20 inH, a weight of 17 pounds and 100% reemay® spunbond polyester construction.
Who it's for, and who should skip it
Good fit if
- Pool cartridge filters
- Owners with the original part number
Look elsewhere if
- Filters with a different part number
Pros and cons
Pros
- Replaces Pentair
- 80 sq ft of media
Cons
- Check length and hole sizes against your old cartridge
- Third-party cartridges rely on the seller's fit statement
Limitations to weigh
- Specifications are the maker's or seller's own; check fit against your equipment's manual and part numbers.
Specifications
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Material | 100% Reemay® Spunbond Polyester | Retailer |
|---|---|---|
| Dimensions (seller) | 7"D x 7"W x 20"H | Retailer |
| Product weight | 17 lb | Retailer |
| Model number | OPT-320-4PK | Retailer |
| Replaces | Pentair | Retailer |
| Filter area (maker) | 80 sq ft | Retailer |
Alternatives worth comparing
More pool and spa filter cartridges we cover
- Unicel C-8417 Pool Filter Cartridge
- Swimara SWPA106U Pool Filter Cartridge
- TOREAD TRF-7488 Pool Filter Cartridge
- TOREAD TRF-7471 Pool Filter Cartridge
All pool and spa filter cartridges, compared in one table · Every Optimum Pool Technologies product we cover
Final verdict
A sensible pool cartridge for pool cartridge filters.
Where to buy
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