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MJSI HYR270 HydroRight Drop-in Dual Flush Toilet Converter for $17.95

MJSI HYR270 HydroRight Drop-in Dual Flush Converter for $17.95.  Shipping is free on orders over $25.  If needed, use this Filler Tool to pad the order to qualify for free shipping.  Here is a screenshot for your reference.  It fits most standard 2″ flush valve and is a fairly simple replacement of the handle and the flapper.