#1 Made in USA Toilet Repair Brand

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. You can also measure the flush valve opening to determine what flapper size you need. 

Choose from the following options: 

  1. Learn how to find the correct size toilet flapper - Video and step-by-step instructions below.
  2. Click find part to find the correct replacement flapper for your toilet.
  3. If this doesn't quite describe your toilet issue, choose from the other common troubleshooting topics.

Does this describe your toilet issue?

Yes! Find a Part or

Step 1

Check out the video to learn more about 2 inch and 3 inch flapper and what's right for your toilet. 

Step 2

Video didn't help? Check out the step-by-step instructions below.

Step 3

You can always give our Technical Support team a call too...We are here and happy to help! U.S.A: (262) 763-2434 & outside U.S.A.: (800) 528-3553. Available: Monday through Friday, 7:30 AM to 5:00 PM CST. 

STEP 1: Toilets vary in size and shape, as do their flush valve systems.  Flappers comes in two sizes, two inch and three inch.  A majority of toilets will use the two inch flapper; however three inch flappers have become popular in recent years and can be found in newer toilets manufactured since 2005. An easy reference for determining your toilet’s flapper size is to look at the flush valve drain opening at the bottom of your tank.

STEP 2: If your flapper is the size of a baseball or an orange, your toilet requires a two inch flapper.

STEP 3: If your flapper is the size of a softball or grapefruit, your toilet requires a three inch flapper.

STEP 4: Now that you have determined what size flapper you need, find the correct replacement, here.

STEP 5: If your toilet has a canister style flush valve, you will need a flush valve seal. To determine exactly what replacement you need, check out our helpful guide, here.