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The 3M Model A Replacement Cartridge is designed for use in 3M Recreational Vehicle / Marine Filtration Systems USF-A and USF-C. Part number 5614505. Model A Specifications: The Model A cartridge should be changed every 3-6 months or 500 gallons depending on water quality and usage.
Compatible Models:
The 3M Model A Replacement Cartridge is correct replacement for the following model numbers:
- 3M System USF-A
- 3M System USF-C
