Williston I, Manitou I & Laurentian Filter

Northern hot tub replacement cartridge filters are the original OEM factory replacement and offer you the best performance and durability. Our hot tub cartridge filters work around the clock to keep your hot tub water clean and clear. Use our hot tub clarifier to enhance the performance of your hot tub filter and, be sure to clean it monthly and change it annually.

Product Fitment:

• Williston I
• Manitou I
• Laurentian