Filbur 6 x 8 1/4", 40 Sf | FC-0359M
FilburManufacturing
SKU: FC-0359M
Filbur FC-0359M Antimicrobial Spa Filter Cartridge 40 Sq. Ft.
The Filbur FC-0359M is a replacement spa filter cartridge designed for select hot tub and spa filtration systems that use a threaded-bottom cartridge. This 40 square foot filter features antimicrobial media and is built to help maintain clean, clear water while supporting dependable circulation in compatible spa systems.
Features
- Genuine Filbur replacement spa filter cartridge
- Part number: FC-0359M
- 40 square feet of filter media
- Antimicrobial filter media
- Approximate dimensions: 6 inches outside diameter x 8-1/4 inches length
- Top style: closed with crescent handle
- Bottom style: 1-1/2 inch SAE threaded connection
- Common cross references: Unicel 6CH-940RA and Pleatco PWW50P3-M
- Common replacement for select Waterway 817-0050 applications
Applications
This replacement cartridge is used in compatible spa and hot tub filter systems that require a compact 40 square foot element with a closed-handle top and 1-1/2 inch SAE threaded bottom. Always verify cartridge dimensions, thread style, and manufacturer part number before ordering.
Important Notes
- Verify exact cartridge dimensions and bottom thread type before purchase
- Designed for compatible spa and hot tub filter applications only
- Replace worn or clogged cartridges promptly to help maintain flow and filtration performance
- Rinse and clean the cartridge regularly according to your spa manufacturer's maintenance schedule
Related Products
- Unicel Replacement Spa Filter Cartridge 52 sf Jacuzzi Premium Spas | 6CH-960
- Shop Replacement Cartridges
- Shop Pool Filters & Filter Parts
Maintenance Tips
- Rinse the cartridge regularly with clean water to remove trapped debris
- Deep clean the filter periodically with a cartridge cleaner
- Inspect the pleats, handle, and threaded bottom for wear or damage during service
- Keep a spare cartridge available to reduce downtime during cleanings
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.
Related Products