The 5401GB 3” Glacier Bay® Adjustable Flapper will help solve a running toilet problem and restore factory performance to your toilet. Specifically designed to fit and enhance performance on Glacier Bay® 3” Flush Valve Toilets, but this model also works on American Standard® Cadet 3.
 
Best for newer toilets, 1.28 & 1.6 GPF (after 1994).  Save water with the adjustable dial design, simply turn for more, or less water flushed. This high quality design also features a durable silicone seal, that lasts up to 10x longer than standard models, and is chlorine and hard water resistant. Fluidmaster®’s 5401GB Glacier Bay® Adjustable 3” Flapper saves water and maximizes performance.