Hot Tub Filters


Single: $39.99

2 Pack: $89.99


Replacement for
  • Filbur FC-2375
  • Unicel C-4326
  • Pleatco PRB25-in
Diameter 5″
Length 13 5/16″
Top 2 1/8"
Bottom 2 1/8"

Simply reorder based on the manufacturer of your previous hot tub filter, locate a part number or measure the length and then the top and bottom diameters.

Please contact us if you have any questions, we are happy to help!

1 (866) 652-6837 (COVER)


Hot tubs and spas are great fun and relaxation for all seasons, but they also need to be properly cleaned and maintained to keep them safe and sanitary all season. Filters keep the hot tub spa water clean and help maintain balanced water chemistry. Made of material that pleats, your filter will catch debris and the smallest of particles and remove them. We recommend replacing or cleaning your filter every 4-6 months.


  • Washable material extends filters life
  • Free flow core
  • High dirt holding capacity
  • Affordable choice

Fits many hot tub spa models including:

  • Accent Spas
  • Acryx-Maax Spas
  • Apollo Spas
  • Aqua Mystic Spas
  • Beachcomber
  • Blue Falls Manufacturing Ltd.
  • Coast Mountain Spas
  • Coleman Spas
  • Custom Molded Products
  • Dakota Spas
  • Emerald Spas
  • Endless Pools
  • Freestyle Spas
  • Futura Spas
  • Great Lakes Home & Resort
  • Hawkeye Spas
  • Honey Tubs
  • Hot Spot
  • Hot Spring Spas
  • Hydropool Industries
  • Islander Spas
  • Jacuzzi Premium
  • Leisure Bay Manufacturing
  • Moonwater Spas
  • Nordic Hot Tubs
  • Onyx Water Products
  • Orca Bay Spas
  • PDC Spas
  • Pentair Pool Products -Rainbow Plastics
  • QCA
  • Rec Warehouse
  • River Valley Spas
  • Royal Spas
  • Rubadub Tub
  • Safari Spas
  • Signature Spas
  • Spa Manufacturers Inc.
  • Streamline Spas
  • Sun Ray Spas
  • Thermo Spas
  • US Spas
  • Viking Spas
  • Water’s Edge Spas
  • Waterway Plastics
  • Zone Spas

Because a filter is designed to collect unwanted particles, debris, oils, soaps, etc, it will need to be cleaned periodically. A blocked cartridge can put undue pressure on your pump and motor and decrease the life of these parts. The Cover Guy Scumball freely floats and removes lotion, body oils and sunscreen from the water before they block up your filter! Grab yours HERE.

All The Cover Guy products are brought to you with quality, safety, and value in mind as part of our commitment to customer satisfaction. We use high quality raw materials and the most up-to-date manufacturing machinery and processes to ensure that we’re providing the highest quality filter cartridges to the market. We have you covered for your Filbur, Pleatco, or Unicel hot tub spa replacement filter needs.