What size flapper do I need?
You discovered there are some differences in flush valve systems and that toilets sizes can vary. An easy reference is to look at the size of the flush valve drain opening in the bottom of the tank. If it’s about the size of an orange or baseball, you need a 2 inch seal. If it looks more like the size of a grapefruit or softball, you need a jumbo 3 inch seal.
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Check out the video to learn more about 2 inch and 3 inch flapper and what's right for your toilet.
Video didn't help? Check out the step-by-step instructions below.
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