Kohler K-3577 Wellworth 1.28 GPF Round-Front Toilet with Class Five Flushing Technology and Left-Hand Trip Lever

- Item #: BCI1295776

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  • How to remove and install a Toilet
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This product has additional required/recommended options. To configure, add to your cart.

  • Toilet Seat Recommended
  • Angle Supply Recommended
  • Wax Ring Kit Required

Product Features:

  • Two-piece configuration eases installation and maintenance
  • Round bowl is perfect for areas with limited space
  • Covered under Kohler's one-year limited warranty
  • Made from Vitreous China for a high gloss, easy to clean finish
  • Floor mounted for ease of install in traditional bathroom configurations
  • Class Five flushing technology provides tremendous bulk waste flushing performance and best-in-class bowl cleanliness
  • Canister flush valve provides smooth flushing actuation with consistent water usage, flush after flush
  • WaterSense certified – toilet uses 20% less water than the current standard while maintaining superior performance

Product Specifications:

  • Overall Height: 28-1/4" (measured from the bottom of the base to the highest point on the toilet)
  • Overall Length: 27-1/2" (measured from the back of the tank to the front of the rim)
  • Overall Width: 19-5/8" (measured from the furthest point on the left to the furthest on the right)
  • Bowl Height: 14-1/2" (measured from the bottom of the base to the rim)
  • Flow Rate: 1.28 GPF (gallons-per-flush)
  • Water Area: 10-1/2" x 7-3/4" (inner rim dimensions length X width)
  • Water Depth (From Rim): 5-1/4"
  • Tank Width: 19-5/8" (measured from left most to right most points on tank)
  • Tank Length: 8" (measured from back most to front most points on tank)
  • Trapway (Discharge Passageway)Size: 2-1/8"

Additional Kohler Links

Our SKU: Kohler K-3577

This product is listed under the following manufacturer number(s):

  • Kohler K-3577-47
  • Kohler K-3577-96
  • Kohler K-3577-7
    Black Black
  • Kohler K-3577-NY
  • Kohler K-3577-95*
    Ice Grey
  • Kohler K-3577-G9*
  • Kohler K-3577-0

*Denotes a finish or option that has been discontinued

Kohler K-3577 Product Specifications

Installation Guide
Specification Sheet
Bowl Height 14.5
Bowl Shape Round
Comfort Height No
Concealed Trapway No
Configuration Two Piece
Country Of Origin USA
Depth 27.5
Flush Technology Class Five
Flush Type Gravity Flush
Gallons Per Flush 1.28
Height 28.25
Installation Type Floor Mounted
Insulated Tank No
Length 27.5
Made in America Yes
Material Vitreous China
Rough In 12
Seat Included No
Theme Basic
Trapway 2.13
Trip Lever Placement Left
Water Efficient Yes
WaterSense Certified Yes
Width 19.63

Installation Resource Center

Whether you are installing the product yourself or hiring a professional, our installation Resource Center has everything you need to get your project done. Visit the Installation Resource Center to get started.

Kohler K-3577 Reviews

Rated 4 out of 5 by from Very small We bought this toilet because Consumer Reports recommended it and because it was small enough to fit a tight space. It flushed very well however it was VERY small. I'm only 5' 4" and it was too small for me, so it was definitely an issue for my 6'2" husband. After a week we replaced it with a Kohler Cimarron, elongated bowl, comfort height which actually was only 1.25" deeper than this one and MUCH more comfortable. I would recommend this Wellworth toilet for a bathroom primarily used by children.
Date published: 2014-09-20
Rated 5 out of 5 by from Great product at an awesome price I ordered this on 8/16/10 and it was delivered on 8/18/10. And shipping was completely free. As for the toilet, Kohler is an name you can trust. I wanted a 1.28 GPF in ice grey, and my choices were somewhat limited. But let me tell you this was a smart purchase. It flushes perfectly anything you can put in the bowl (LOL). I have 3 children and they use lots of toilet paper, and this bowl has no problem with wads of toilet paper. I will buy this same bowl for my other bathroom. Thanks
Date published: 2010-08-20
  • I am looking for toilet that is at least 20 in. from floor to seat.

    A. The highest bowl height that we have is 17.75" tall.
  • Does k-3577 or k-3497 have insulated tanks?

    A. The Kohler K-3577-U and the K-3577-UR both have insulated tanks. The K-3497 does not have an insulated version.
  • It states that an angled water supply is recommended. Can it be used with a straight (vertical) water supply and if so, is there any loss in performance?

    A. The Kohler K-3577 is compatible with the straight (vertical) water supply at no loss in performance.
  • What is the flushing grams of this Kohler unit?

    A. The Kohler K-3577 has the Class 5 Flushing System, which is rated to move between 800 and 1000 grams of solid waste per flush.
  • What is the bowl hight of the K-3577 and what is the recommended toilet seat?

    A. The bowl height of the Kohler K-3577 is 14-1/2".

    Depending on the seat that you want, it is recommended to be used with K-4658 or the K-4689.

  • What is a class five flush system?


    The Class Five is designed for extraordinary bulk flushing performance. Its large flush valve allows rapid release of water combined with a direct fed jet and maximizes water flow.

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