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Sta-Rite S7M120-Set System 3 S7M120 Modular Media 300

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Sta-Rite S7M120-Set System 3 S7M120 Modular Media 300

Sta Rite S7M120 Replacement Filter Cartridge Features:

  • Fits System 3 S7M120 modular media 300 filter
  • Small 100 square foot cartridge measures: 25-1/4”l x 8-1/2"d
  • Large 200 square foot cartridge measures: 18-1/2”l x 16-1/4”d
  • Cartridges included: 25021-0200S and 25022-0201S


This Sta-Rite replacement filter cartridge kit is designed for the System 3 S7M120 modular media filter. Because of its large 300 square foot filter area, the S7M120 filter houses one smaller inner cartridge (100 square foot) and one larger outer cartridge (200 square foot). This kit includes one small and one large replacement cartridge. Easy to clean and simple to replace, the replacement filter cartridge kit is efficient at capturing fine debris, leaving you with clearer, cleaner pool water.


  • 5

    Posted by Paula Roskamp on Apr 26, 2021

    They are the correct filters and they look great!
    It is April and we don’t open our pool until mid- May, so maybe writing a review once we have turned on our pool would be more helpful.
    Great service and delivery though! And price!

  • 5
    Quality product & great service.

    Posted by Cathy Macknak on Jun 24, 2019

    This is the third time I have ordered the Sta-Rite S7M120 Modular Media 300 filters from Canada Hot Tub Parts. They are one of the few suppliers in Canada who carry this product with free & fast delivery. Canada Hot Tub Parts Offers this product at a better price than our local supplier and delivery time is quicker. We have been very satisfied with the performance of the product (they last about 3 years) and will continue to order them for as long as we own our current filtration system.