Monarch O2 Spa Filter Element Cartridge – MS50 / C45 Replacement Supply

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SKU: US-1672934588473 Categories: ,


Monarch O2 Spa Filter Element Cartridge – MS50 / C45 Replacement

The Monarch Spa Filter Element – Suits Monarch Spa 45 Sq Cartridge is a premium high performance aftermarket element, identical in quality to the original element at a fraction of the price. A perfect swap for your cloudy spa!

Generic Spa Filter Cartridges utilise revolutionary filtration material that are designed to be strong, robust and return to a high state of original performance after cleaning, meaning greater usability and longer cleaning cycles.

Generic replacement cartridge filters come with a solid 12 month warranty!

Fits Monarch spas: Duchess, Earl, Contessa Classic, Contessa Hydro Plus, Sultan Classic, Sultan Hydro Plus Crown Classic, Crown Hydro Plus, Jubilee, Royale Classic, Royale Hydro Plus Marquis, Grand Duke Classic, Grand Duke Hydro Plus, Regal

Fits O2 spas manufactured prior to Nov 2010

  • Monarch Spas 45sqft Filter Cartridge
  • US-made filter media
  • Superior filtration and longer life


Dimensions of Filter:

  • Diameter: 143mm
  • Length: 20mm (not including the thread)
  • Hole: 37mm ID Fine Male Thread
  • End Style: Flat / Semi Circle



  1. Revolutionary Quality – All Generic Filters are manufactured from premium quality filtration material and molded end caps to ensure long life.
  2. Filtration Performance – The premium filtration material is strong, robust and ensures longer filter cycles with reduced maintenance.
  3. Reinforced Core – Generic cores are reinforced with advanced design supports to ensure they do not collapse or implode.
  4. Chemical Resistant – The entire filter is manufactured from material that is heavy duty and resistant to chemicals, durable and strong enough to perform, clean after clean.



  • Why buy from us? – Mr Pool Man is Australia’s largest retailer of aftermarket filter elements with 160,000+ happy customers!
  • Warranty – All filters come with a 12 month warranty and are backed by a 100% satisfaction, money back guarantee. We love them too!
  • Low Maintenance – Strong pleats on each filter increase longevity and reduce maintenance!


Monarch O2 Spa Filter Element Cartridge - MS50 / C45 Replacement Supply