How to Determine Size of Toilet Flapper

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Korky Premium Large 3-Inch Univ…

$23.18

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4.5

Flapper For 1-Piece Toilet

$15.00

Perigold

4.5

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Toto 3" Universal Toilet Tank Flapp…

$13.21

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5.0

Korky 723X Top Mount 2-Inch Flus…

Universal Toilet Flapper Replace…

Hibbent Universal Front Mount Toile…

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4.5

Toilet Flapper Replacement Kit, …

$9.99

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4.0

American Standard 7381657-200.007…

Toilet Flapper Replacement For …

Danco Complete Toilet Repair Kit, …

3 Inch Toilet Flapper Replacement, Lar…

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4.5

Lasnten 16 Pcs Toilet Flapper 3 In…

2 Pack 3-Inch Universal Toilet Fl…

$16.99

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Hibbent 2 Pack Large 3-Inch Toile…

Gerber 99-827 Toilet Flapper - 3 I…

3 Pack Toilet Tank Flapper 3 Inch Toi…

Easy to Install · Easy to Replace · Perfect Fit · Well-crafted · Works as expected

Korky 3060BP Universal Toilet Fl…

Fluidmaster 400Cr Universal Toilet Fi…

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$19.99

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4.5

Gerber 99-827 Toilet Flapper - 3 I…

3 Pack Toilet Tank Flapper 3 Inch Toi…

Easy to Install · Easy to Replace · Perfect Fit · Well-crafted · Works as expected

Korky 3060BP Universal Toilet Fl…

Fluidmaster 400Cr Universal Toilet Fi…

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$19.99

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4.5

2Pack 2-Inch Universal Toilet Fl…

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2 in. Toilet Tank Flapper With Shar…

3-Inch Toilet Flappers Replace…

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4.5

TOTO Combo Kit - Universal Flapper …

3 Inch Toilet Flapper Replacement Co…

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  3 Pack Fluidmaster 500 2-Inch Univ…
  $17.09
  $18.99
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  Universal Solid Frame Adjustable Fl…
  $22.99
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  Adjustable Toilet Flapper 3-Pack, C…
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  Adjustable 3-Inch Toilet Flapper Fo…
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  1 Pack Plumbcraft 7542700 3" Blac…
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  Universal Toilet Tank Flapper (3 Pa…
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  3 Inch Toilet Flapper Replacement, …
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  Ultra 2 in. Toilet Tank Flapper Free …
  $9.06
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  3 Pack Toilet Tank Flapper 3 Inch T…
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  NUFLUSH 2 Inch Toilet Silicone Bla…
  $48.47
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  Qualihome Universal 3 Inch Toilet Fl…
  $35.00
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  3 in. Universal Adjustable Toilet Tan…
  $13.59
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  Toilet Flapper Replacement Kit 3 In…
  $22.22
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  Universal Toilet Flapper Replaces M…
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  Large 3in Blue Toilet Flapper. Blue. …
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  Case Of 12 Fluidmaster 501 Univer…
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  1 Pack Plumbcraft 7542700 3" Blac…
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  Residential 3-Inch Toilet Flapper - D…
  $45.99
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  2 Pack Toilet Flapper Replacement …
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  Universal Toilet Flapper
  $4.00
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  Large 3-Inch Universal Toilet Flappe…
  $41.39
  $44.99
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  Toilet Tank Flapper
  $17.99
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  3060Bp Universal Toilet Flapper Re…
  $18.79
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  Ace 43749 Toilet Tank Flapper Blue…
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  Toilet Flapper Replacement - 3 Inc…
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  4.5
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  Toilet Flapper Ultra High Performan…
  $9.29
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  Korky Universal Toilet Flapper LAR…
  $8.00
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  WB Brass Vinyl Toilet Flapper Clea…
  $40.00
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  Korky 2022BP TOTO Toilet Repair…
  $12.00
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  Universal Toilet Flapper (3-Inch An…
  $20.87
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  Korky Premium Rubber Toilet Flapp…
  $116.05
  $134.99
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  Residential 3-Inch Toilet Flapper - D…
  $47.99
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  4.7
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  18
  4.7
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  4X Fluidmaster 500 2-Inch Universa…
  $1.99
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  Free shipping
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American Standard Toilet 3 Inch Flap…
$17.99
US eBay
Free shipping
Korky Flapper, Fits Older Brass Flus…
$12.81
Walmart
5.0
·
2
Teviora Universal Toilet Flusher Re…
$15.99

$18.99
Amazon.com
4.0
·
200
Gadgetime USA Toilet Flapper Re…
$15.69
$3.92 / 1 ct
Amazon.com
4.0
·
27
Fluidmaster K-400A-5004 Unive…
$32.04
Amazon.com
4.5
·
10K+
Valve Flush With Flapper 3 in. K-54…
$17.99
Agri Supply
Easy to Install · Effective for leaks · Perfect Fit · Value for Money · Well-crafted
3 in. Universal Adjustable Toilet …
$10.87
Home Depot
4.5
·
45
Korky 3060Bp 3" Universal Toilet Fl…
$28.23
Walmart
Free shipping
Flapper For 1-Piece Toilet
$10.73
Home Depot
4.0
·
41
Easy to Install · Perfect Fit · Well-crafted
Korky 2021BP G-Max Flapper For …
$11.72
Amazon.com
4.5
·
1K+
Korky 2011BP Hinge Flapper Fo…
$9.99
Amazon.com
4.5
·
1K+
Fluidmaster 507AP7 507AP7 Toilet Flu…
$6.36
SupplyHouse.com
5.0
·
1
3.25 in. Class Five Toilet Tank Flapper
$12.65
Home Depot
5.0
·
232
Lychee Light Toilet Flush Valve Asse…
$29.99
Amazon.com
4.0
·
67
Fluidmaster Universal Super T…
$179.97
eBay
Free shipping
Flapper
$19.00
Perigold
5.0
·
3
Curbside
Korky Quietfill Platinum Toilet Fil…
$19.97
Walmart
5.0
·
1
3 ¼" Class 5 Toilet Flapper
$11.33
Home Depot
4.0
·
33
Used
16-Pack Fluidmaster Unive…
$104.49

$109.99
eBay
5.0
·
1
Proflo Pf5112frpk Flapper Part For …
$19.02
Walmart
5.0
·
5
- Determine Toilet Flapper Size - Top 5 of 2025 - BestReviews
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