Kohler K-2381-1 Thunder Grey Kelston 15-3/8" Drop In Bathroom Sink with 1 Hole Drilled and Overflow

- Item #: BCI557924

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Thunder Grey
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Product Features:

  • Rectangular basin gives a classically clean look to your bathroom countertop
  • Covered under Kohler's limited lifetime sink warranty
  • Constructed from vitreous china providing a classic look and feel
  • Bring warmth and style to the bathroom
  • Versatile design that fits both traditional and contemporary bathrooms
  • Drop in installation delivers a clean appearance to your existing bathroom design
  • Center drain location provides optimal draining capability
  • Equipped with overflow drain - works in tandem with the primary to prevent an overflow or spillage
  • All hardware needed for installation included

Product Technologies / Benefits:

  • Drop In Sinks: A rim or lip sits on the counter while the basin rests below. Ideal for remodeling, these sinks can be easily retrofitted to an existing counter.

Product Specifications:

  • Overall Length: 23-7/16" (measured from the left outer rim to the right outer rim)
  • Overall Width: 20-11/16" (measured from the back outer rim to the front outer rim)
  • Height: 5-5/16" (measured from the bottom of sink to the top of the rim)
  • Basin Width: 13-3/16" (measured from the back inner rim to the front inner rim)
  • Basin Length: 15-3/8" (measured from the left inner rim to the right inner rim)
  • Basin Depth: 1-7/8" (measured from the center of basin to the rim)
  • Installation Type: Drop in
  • Number of Faucet Holes: 1
  • Drain Outlet Connection: 1-3/4"


  • K-2381-1: This model
  • K-2381-4: 4" faucet center version of this model
  • K-2381-8: 8" faucet center version of this model

Additional Kohler Links

Our SKU: Kohler K-2381-1

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

  • Kohler K-2381-1-47
  • Kohler K-2381-1-96
  • Kohler K-2381-1-7*
  • Kohler K-2381-1-7
    Black Black
  • Kohler K-2381-1-K4*
  • Kohler K-2381-1-NY
  • Kohler K-2381-1-95
    Ice Grey
  • Kohler K-2381-1-55
    Innocent Blush
  • Kohler K-2381-1-33*
    Mexican Sand
  • Kohler K-2381-1-52*
  • Kohler K-2381-1-G9
  • Kohler K-2381-1-6*
  • Kohler K-2381-1-Y2*
  • Kohler K-2381-1-58
    Thunder Grey
  • Kohler K-2381-1-0
  • Kohler K-2381-1-45*
    Wild Rose

*Denotes a finish or option that has been discontinued

Kohler K-2381-1-58 Product Specifications

Specification Sheet
Basin Depth 1.875
Basin Length 15.188
Basin Width 13.188
Country Of Origin USA
Drain Assembly Included No
Drain Connection 1.75
Drain Placement Center
Faucet Centers 0
Faucet Holes 1
Faucet Included No
Height 5.313
Installation Type Drop In
Length 23.438
Made in America Yes
Material Vitreous China
Mounting Type Single Hole
Number Of Basins 1
Overflow Yes
Sink Shape Rectangular
Theme Modern
Width 20.68

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-2381-1 Reviews

Rated 5 out of 5 by from Nice Sink, Clean Lines, A little shallow Looks terrific on my new black granite counter tops. Has a clean contemporary look but is not ultra contemporary. The sink is shallow but the wide sides make it easy to set things on.
Date published: 2011-06-04
Rated 5 out of 5 by from Great sink This is a very nice sink and is of great quality. It looks great in my bathroom and was easy to install. Customer service was excellent.
Date published: 2013-03-28
Rated 5 out of 5 by from Looks Great Very happy with the sink. It brought our 1980's bathroom up to date instantly. Modern looking w/ clean lines.
Date published: 2014-08-30
Rated 5 out of 5 by from classy basin I now have 3 of these in my 2 bathrooms and they look great with Kraus faucets. Only had to shave the granite a little to fit so very happy with purchase. Item arrived very promptly and shopping with 'Build' has been an excellent experience.
Date published: 2014-02-06
Rated 5 out of 5 by from had to return We needed the three hole not the one hole. The replacements were correct and they work and look great...
Date published: 2014-02-04
  • does this come with mounting parts for top of vanity?

    A. The Kohler K-2381-1 includes all mounting hardware.
  • is sku 2381-1 ADA compliant?

    A. Yes, the Kohler K-2381-1 is ADA compliant. Please let me know if you have any further questions.
  • can it be put on top of a laminate counter?

    A. The Kohler K-2381-1 would work just fine on a laminate counter, as it is a self mounting sink.
  • Does it include the pop up?


    The Kohler K-2381-1 Is the sink only, the faucet and pop up drain are to be purchased separately.

Buy the Kohler K-2381-1-58 in Thunder Grey at Build.com. Research Kohler K-2381-1-58 in Thunder Grey online. Find Kohler K-2381-1-58 in Thunder Grey features and specifications. Get the best deal by comparing the Kohler K-2381-1-58 in Thunder Grey today.

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