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How to Install Fluidmaster's 400AH PerforMAX® Toilet Fill Valve

Fluidmaster® recommends the PerforMAX® 400AH toilet fill valve for toilets manufactured from 1994 to the current time (works on older toilets). If you are replacing the fill valve, we recommend you also replace the flapper with the 502 flapper for the best performance. To learn more about this product, please click here: 400AH PerforMAX® Toilet Fill Valve

To download our free guide to fix common toilet problems please click here: Fluidmaster Toilet Repair Guide

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How to Install Fluidmaster's 400AH PerforMAX® Toilet Fill Valve