Unicel Replacement Filter Cartridge 60 sf Jacuzzi Premium Spas | 6CH-961
Unicel
SKU: 6CH-961
Unicel 6CH-961 Replacement Spa Filter Cartridge – 60 Sq Ft (Jacuzzi Premium J-300 / J-400 Style)
The Unicel 6CH-961 is a 60 sq ft pleated replacement spa filter cartridge commonly used in select Jacuzzi Premium spa systems (including many J-300 and J-400 series setups). It features a 6-3/4" outside diameter body, a 15-1/2" length, an open/slotted top, and a 2" male SAE (coarse) threaded bottom connection for a secure, threaded fit in compatible filter canisters.
Key Features
- 60 sq ft filtration area for strong debris capture and clear water
- Bottom connection: 2" male SAE coarse thread for secure installation
- Top: open/slotted style for proper flow-through design in compatible housings
- Durable pleated media and rigid core built for repeated rinsing and deep-clean cycles
- Ideal replacement when the original cartridge is torn, flattened, or no longer cleans up effectively
Specifications
- Part Number: 6CH-961
- Filtration Area: 60 sq ft
- Outside Diameter: 6-3/4" (6.75")
- Length: 15-1/2" (15.5")
- Top End: Open / slotted style
- Bottom End: 2" male SAE thread (coarse)
Replaces / Cross References
- Jacuzzi Premium: 6541-383 (also commonly listed as 6540-383 depending on catalog)
- Pleatco: PJW60TL-OT-F2S
- Filbur: FC-2715
- Tier1: PAS-1342
Compatibility Notes
- This cartridge uses a threaded bottom connection (SAE coarse). If your existing filter has a slip fitting, different thread size, or a closed/handled top style, you may need a different cartridge.
- Some Jacuzzi-style canisters use an injection-molded top handle/cap piece that transfers from the old filter and is not included with the cartridge—confirm your current setup before ordering.
- Best practice: match the part number and confirm the 6-3/4" OD, 15-1/2" length, and 2" male SAE threaded bottom.
When to Replace
- Water stays cloudy or circulation feels weak even after cleaning
- Pleats are torn, frayed, or separating from end caps
- Cartridge quickly plugs up again after rinsing
- End caps or threaded connection are cracked/warped and won’t seal properly
Related Products
- Unicel 6CH-961 (Shop / Options)
- Spa Cartridge Filter Cleaner
- Cartridge Cleaning Wand
- Spa Water Test Strips
- Spa Scale Remover
- Spa Fill / Hose Pre-Filters
Maintenance Tips
- Rinse the cartridge regularly (often weekly with heavy spa use) to prevent restriction and keep jets performing well.
- Deep clean every 3–6 weeks with a cartridge cleaner to remove oils; rinse thoroughly before reinstalling.
- If scale is present, degrease first, then treat for scale (never reverse the order), and rinse completely.
- Rotating between two cartridges (one in use, one drying after cleaning) can extend overall filter life and improve filtration.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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