SC704 Darlly replacement Hot Tub Spa filter cartridge for Artic Spas, Caldera Spas, Canadian Spas, Coast Spas, Beachcomber plus many more. The Darlly SC704 (Pleatco: PRB251N / Unicel: C-4326) replacement Hot Tub Filter Cartridge is suitable for a range of hot tub - see the range of suitable hot tub models below. 


  • 1 Year Guarantee.
  • Made with Reemay Filtration Fabric.
  • Durable plastics reduce chemical damage & increase lifespan.
  • Washable and re-usable, should outperform guarantee period.
  • This hot tub filter is compatible with multiple brand/model hot tubs.



  • Top: 5cm Hole
  • Bottom: 5cm Hole
  • Darlly: 42513
  • Length: 34cm
  • Diameter: 13cm
  • Sq Ft: 25



  • Pleatco: PRB251N
  • Unicel: C-4326



  • Apollo Spas    
  • Aqua Mystic Spas
  • Arctic Spas
  • Artesian Spas
  • Beachcomber
  • Cal Spas
  • Caldera
  • Canadian Spas
  • Coast Spas
  • Coleman Spas
  • Coyote Hot Tubs
  • Crest Spas Europe
  • Great Lake Spas
  • Hotspring
  • Hydro Spa
  • Hydropool Spas
  • Jacuzzi Spas
  • Leisure Bay Spas 
  • Maax Spas
  • Mistral Hot Tubs
  • Nordic Spas
  • PDC Spas
  • Rota Spas
  • Signature Spas
  • Southwest Spas
  • Sun Ray Spas
  • Sunrise Spas
  • US Spas
  • Viking Spas    
  • Vita Spas 

SC704 Darlly Hot Tub Spa Filter

SKU: DE SC704 C-4326
£23.99 Regular Price
£21.59Sale Price
  • We understand that choosing the right replacement hot tub filter cartridge may seem daunting, so our hot tub experts have put together a simple guide including frequently asked questions in choosing the right filter for your hot tub > click here


    If you still need advice, then please do not hesitate to contact us directly on 0800 112 3886 or alternatively email where we will be more than happy to answer your questions.