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- Fluidmaster 3" Universal FlapperHome Depot & moreFree delivery by Tue(131)
Fluidmaster 3" Universal FlapperHome Depot & moreFree delivery by Tue(131) - Korky Flapper Universal 3060BPLowe's & more(2.1K)Korky Flapper Universal 3060BPLowe's & more(2.1K)Easy to install (546 user reviews)
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- AMERICAN STANDARD 3 Inch Toilet Tank Flapper Valve SetHome Depot & moreFree delivery by Tue(230)AMERICAN STANDARD 3 Inch Toilet Tank Flapper Valve SetHome Depot & moreFree delivery by Tue(230)
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- Korky 2X High Performance 3-in Rubber Universal Toilet FlapperLowe's & more(168)Korky 2X High Performance 3-in Rubber Universal Toilet FlapperLowe's & more(168)
People also ask
Are most toilet flappers 2 or 3 inches?
Most toilets, especially older ones, use a standard 2-inch flapper, but newer, high-efficiency toilets (HETs) often use a larger 3-inch flapper to move more water for a powerful flush with less water. To know for sure, you need to measure the diameter of the flush valve opening in your toilet tank—2 inches for standard, 3 inches for large.
How to Determine Your Size
- Shut off the water supply: to the toilet and flush to empty the tank.
- Measure the flush valve: Look at the round opening at the bottom of the tank where the water drains out.
- Check the size:
- If it's about the size of a tennis ball or orange (around 2 inches), you need a 2-inch flapper.
- If it's larger, like a softball or grapefruit (around 3 inches), you need a 3-inch flapper.
- If it's about the size of a tennis ball or orange (around 2 inches), you need a 2-inch flapper.
This video demonstrates how to measure your toilet's flapper size:
Korky Toilet Repair
YouTube · Nov 7, 2025
Key Takeaway
While 2-inch flappers are the classic standard, 3-inch flappers are common in modern low-flow toilets, so measuring is essential for a correct replacement.
AI responses may include mistakes. Learn more
What Size Flapper Do I Need? - Korky® Toilet Repair
You discovered there are some differences in flush valve systems and that toilet sizes can vary. Although different types of flapp...
Korky® Toilet Repair
What toilet flapper size do I need?
Aug 31, 2017 — hello and welcome to howto with Corki. today we will teach you how to determine the correct flapper size for your toil...
YouTube ·
Korky Toilet Repair
How to Determine What Size Flapper You Need
Nov 7, 2025 — did you know one in five toilets leak most of the time. this is caused by an old flapper. and can be easily fixed by ge...
YouTube ·
Korky Toilet Repair
How to pick the right toilet flapper for your toilet | Korky Toilet Repair
Nov 28, 2022 — when the toilet is flushed the chain connecting the toilet flapper to the flush lever lifts the flapper to allow water...
YouTube ·
Korky Toilet Repair
Toilet Flapper: Sizing, Replacement & Savings - HOROW
Nov 18, 2025 — Sizing isn't guesswork. Using the right flapper size ensures a good seal, proper flush volume, and no leaks. A 2-inch ...
HOROW
Choosing the right flapper for your toilet - Fluidmaster
4. Keys to understanding how to select a flapper can be as easy as: * Know the age of your toilet (if you don't know, guess the a...
Fluidmaster
Replace Toilet Flapper - Toilet Flapper Sizes
Aug 15, 2014 — i'm going to share a couple tips if you're replacing the flap in your toilet. there used to always be a universal size...
YouTube ·
FIX IT Home Improvement Channel
Choosing the Best Toilet Flapper Replacement - Plumbing Deals
Jun 13, 2025 — Size Matters Toilet flappers typically come in two sizes: 2 inches and 3 inches. 2-inch flappers are the most common s...
Plumbing Deals
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How do I identify my toilet flapper?
0:00
1:01
If the outside diameter is about 3 in it is a 2-in flapper. And if the outside diameter is about 4MoreIf the outside diameter is about 3 in it is a 2-in flapper. And if the outside diameter is about 4 in it is a 3-in flapper. But that's not all look for the same manufacturer. And model for best. Fit.
What Size Toilet Flapper Do I Need? | How to Fix a Toilet for Beginners
YouTube
https://www.youtube.com · Hacks by Dad
YouTube
https://www.youtube.com · Hacks by Dad
How do I find the right flapper for my toilet?
0:55
2:19
You can determine your flapper size by measuring the diameter of the flush valve opening. SomeMoreYou can determine your flapper size by measuring the diameter of the flush valve opening. Some flappers are adjustable. And allow you to control the amount of water that is flushed.
How to pick the right toilet flapper for your toilet | Korky Toilet Repair
YouTube
https://www.youtube.com · Korky Toilet Repair
YouTube
https://www.youtube.com · Korky Toilet Repair
Why does my toilet still leak after replacing the flapper?
If your toilet still leaks after replacing the flapper, the issue is likely the flush valve seat (dirty, damaged, or worn), the flapper chain (too tight/loose), the refill tube (too long/aimed wrong), or the fill valve/water level is set too high, causing water to spill into the overflow tube, requiring you to clean the seat, adjust the chain/float, or even replace the entire flush valve assembly.
This video shows common issues that cause a toilet to keep running after a flapper replacement:
Apartment Maintenance Pro
YouTube · Nov 3, 2024
Common Causes & Solutions:
- Dirty or Damaged Flush Valve Seat:
- Problem: Mineral buildup or corrosion on the porcelain/plastic rim where the flapper seals creates gaps.
- Fix: Turn off water, drain tank, sponge dry. Use fine sandpaper or emery cloth to smooth the rim; clean thoroughly.
Watch this video to see how to clean the flush valve seat and what to look for:
KungFuMaintenance
YouTube · Nov 15, 2013
- Incorrect Flapper Chain Length:
- Problem: Chain too tight keeps flapper slightly open; too loose delays closure.
- Fix: Adjust so there's just a slight bit of slack when the flapper is closed (about 1/2 inch).
This video demonstrates the correct length and slack for a toilet flapper chain:
Hacks by Dad
YouTube · May 11, 2022
- Refill Tube Issues:
- Problem: The small refill tube (connected to the fill valve) is pushed too far down the overflow pipe, siphoning water.
- Fix: Ensure the tube's end is above the water line and clipped to the overflow pipe, not inside it.
- Problem: The small refill tube (connected to the fill valve) is pushed too far down the overflow pipe, siphoning water.
- Water Level Too High:
- Problem: Water level is above the top of the overflow tube, constantly spilling in.
- Fix: Adjust the fill valve's float cup or arm to lower the water level so it stops a half-inch below the overflow tube.
- Problem: Water level is above the top of the overflow tube, constantly spilling in.
- Warped/Wrong Flapper:
- Problem: Cheap replacements, chlorine damage, or using the wrong type for your toilet.
- Fix: Ensure you bought the right model; consider silicone grease on the new flapper's lip for a better seal.
- Problem: Cheap replacements, chlorine damage, or using the wrong type for your toilet.
- Damaged Flush Valve:
- Problem: The entire plastic flush valve assembly might be warped or cracked.
- Fix: If cleaning the seat doesn't work, you may need to replace the entire flush valve assembly (a bigger job).
- Problem: The entire plastic flush valve assembly might be warped or cracked.
This video provides an updated guide for fixing leaks on specific toilet models like the American Standard Champion:
Check It Out !!!
YouTube · Aug 8, 2018
AI responses may include mistakes. Learn more
Water keeps flowing slowly in toilet bowl after replacing the ... - Reddit
Jan 24, 2025 — If you replace the flapper and it still leaks then it's the fill tower . The little hose that clips onto the hollow tu...
Reddit
Toilet Flapper Leaking After Replacement (Solved) - Neighborhood Plumbing, Heating, Air Conditioning and Electrical
Aug 15, 2025
Neighborhood Plumbing, Heating, Air Conditioning and Electrical
STILL LEAKING? HERE'S HOW TO FIX IT! (2024 UPDATES) American ...
Aug 8, 2018 — video this is the American Standard Champion for toilet if yours is still leaking after watching our first video I'm go...
YouTube ·
Check It Out !!!
Replaced all the parts but toilet still leaks....I need help. - Houzz
Oct 5, 2008 — If it does, either the flapper seal is leaking or the flush valve gasket between the flush valve and the tank is leakin...
Houzz
Why is my toilet still running after replacing the flapper? - Facebook
Jan 6, 2024 — 2 yrs. 2. Alexis Pocsi Richardson. If you buy the kit and it will explain to you how to do it, but you probably need a ...
Facebook ·
Cheyenne Community Connections
What To Do When Your Toilet Keeps Running - Roto-Rooter
Step 4: Check the Flush Valve If you've replaced the flapper and adjusted the float ball, but the toilet continues to run, the mos...
Roto-Rooter
How to identify and fix toilet flapper leaks - Fluidmaster
Siphoning Siphoning occurs when the refill tube is pushed too far into the flush valves overflow pipe. If the end of the tube is i...
Fluidmaster
Toilet Flap Replaced but Water Runs? Expert Troubleshooting Guide
Feb 26, 2025 — Toilet Flapper Replacement Issue: Water Runs Periodically. Flapper seats not sealing properly and chain length causing...
JustAnswer
How to Fix a Running Toilet - Korky
Why Flappers and Seals Wear Out. Over time, rubber parts inside your toilet are exposed to treated water, which can cause them to ...
Korky® Toilet Repair
Fixing Toilets if you are Blind or Low Vision - ConnectCenter
A toilet may leak water from the tank into the toilet bowl for a number of reasons: * **Fill valve** The fill valve may need repla...
APH ConnectCenter
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Large 3" Genuine TOTO® Toilet Flapper
Korky® Toilet Repair
https://www.korky.com › parts › flapper-seal-replacements
Korky® Toilet Repair
https://www.korky.com › parts › flapper-seal-replacements
The Genuine TOTO large 3-inch toilet flapper by Korky is fully adjustable to fit all 3 inch TOTO toilet models. It is made with the longest lasting material ...Read more
Korky Large 3 Inch Adjustable Flapper – 3060BP
Consumers Supply Company
https://www.consumersplumbing.com › product › korky...
Consumers Supply Company
https://www.consumersplumbing.com › product › korky...
Adjusts to fit all 3 inch toilets · Universal design fits large 3 inch flush valves · Adjustable settings to match performance of OEM flapper ...Read more
Korky Premium Large 3-Inch Universal Toilet Flapper
Amazon.com
https://www.amazon.com › Korky-Premium-3-Inch-Un...
Amazon.com
https://www.amazon.com › Korky-Premium-3-Inch-Un...
Korky Premium Large 3-Inch Universal Toilet Flapper - Long Lasting Rubber - Easy to Install - Made in USA, Adjusts to fit all 3 Inch flush valves
513A-016 Universal 3" Flapper
Fluidmaster
https://fluidmaster.com › products › toilet › universal-3...
Fluidmaster
https://fluidmaster.com › products › toilet › universal-3...
The 513A flapper from Fluidmaster will fit 3" toilets like Toto, Kohler Cimmaron, American Standard, Glacier Bay and Mansfield.
Largest Selection of Toilet Flappers
PlumbingSupply.com
https://www.plumbingsupply.com › flappers
PlumbingSupply.com
https://www.plumbingsupply.com › flappers
American Standard 3" Flapper. American Standard 3-inch toilet flapper. - fits Town Square (4216) 1.28 gpf high efficiency toilets. 7381043-400.0070A - $23.39.Read more
Universal 3 in. Premium Adjustable Toilet Tank Flapper
The Home Depot
https://www.homedepot.com › Fluidmaster-Universal-3-i...
The Home Depot
https://www.homedepot.com › Fluidmaster-Universal-3-i...
An adjustable toilet repair part built to replace many toilet flapper brands including Mansfield, Toto, American Standard , Glacier Bay, Gerber and more.
$10.75(636)
Korky® 3 inch Premium Universal Toilet Flapper
Southern Pipe
https://www.southernpipe.com › Product
Southern Pipe
https://www.southernpipe.com › Product
Korky® 3 inch Premium Universal Toilet Flapper · Your Part # : · Mfg.Part # : 3060BP · Mfg.Name : Lavelle Industries, Inc · Part # : LV3060BP · UPC # : 049057103500.Read more
$21.11$15 delivery
3 Inch Toilet Flapper Replacement - Premium Rubber ...
mocfv.org
https://mocfv.org › index.php › view › 3-Inch-Toilet-Fl...
mocfv.org
https://mocfv.org › index.php › view › 3-Inch-Toilet-Fl...
For Gerber Toilets. It's compatible with Gerber 99-788 and other standard 3-inch models, 2025 mocfv.org.
$9.00Out of stock(731)
3 inch toilet flapper Manufacturer,Custom ...
Xiamen Jielin Plumbing Co.,Ltd.
https://www.jlplumbing.com › 3-inch-toilet-flapper-1
Xiamen Jielin Plumbing Co.,Ltd.
https://www.jlplumbing.com › 3-inch-toilet-flapper-1
Jul 25, 2025 — We are china 3 inch toilet flapper manufacturer. Offer high quality 3 inch toilet flapper at factory price! Inquiry now!
2" or 3" Toilet Flapper
Fluidmaster
https://fluidmaster.com › toilet-problems › determining-...
Fluidmaster
https://fluidmaster.com › toilet-problems › determining-...
Toilet flappers come in 2" or 3" sizes. Fluidmaster's Super Flapper is the ONLY toilet flapper that replaces both 2" and 3" flappers.
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