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This is the genuine Red Sea replacement part: RSK-300 Diffusor. Part number R50526 is cross-checked against Red Sea's factory specifications, so it fits and performs exactly like the original — no third-party guesswork.
Ships free and duty-free to the US, Canada, and the EU.
Fits: REEFER DC Skimmer 300, REEFER Skimmer 300, Part #R50526