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Kohler K-6487-0 Self-Trimming Undermount Kitchen Sink Review

If you’ve been looking around for a reviewed apron front farmhouse sink, you would have definitely seen the Kohler K-6487-0 kitchen sink. With it’s “self-trimming” feature (more on this later), quality material and competitive price point, many people claim that this is the best farmhouse sink ever. I wanted to find out what exactly makes this sink stand out from the rest and whether the hype is due to a great product, or simply clever marketing.

Things to consider before buying an Apron-front Farmhouse Kitchen Sink


Farmhouse sinks tend to be made of dense and heavy materials such as Cast Iron and Fireclay due to their sturdiness and durability. These materials are scratch and stain resistant, allowing them to withstand heavy usage and keep their original look for many years after purchase.

The apron-front of the sink allows it to stand out as a centerpiece of your kitchen, while elevating the visual profile of your existing kitchen.

The true white colour of these materials further enchance this look, giving your kitchen the traditional look that some higher end homes go for. 

With that said, these materials tend to be more pricey to lighter materials such as stainless steel. Users who are looking for an affordable, functional sink may want to consider alternatives such as stainless steel

Also check out : 5 Best Stainless Steel Sinks in 2019

Mounting and Installation

Mounting and cutting the cabinetry is always a big concern when it comes to getting an apron-front kitchen sink. As the materials used in apron-front sinks tend to be very heavy, support in the lower cabinetry is often required to make sure that the sink does not collapse. 

Apron front sinks also tend to be wide and deep (often over 30” wide and 10” deep), making it rather unsuitable for smaller kitchens in apartments. This also makes it difficult to handle and DIY with the bulkiness and weight of the sink, so a friend or engaging a professional is often recommended.

These days, sink manufacturers are exploring features such as the self-trimming feature in the Kohler K-6487-0 which aims to make installation easier and reduce work needed on existing cabinetry. The self-trimming feature involves giving the sink edges an inverse L shape so that the cabinet edges only have to be trimmed slightly. 

This is great for people who are looking to replace their existing kitchen sink or foresee changing their sink soon. At the same time, the classic apron-front appearance is retained so visitors won’t be able to notice any difference in your sin.

Who is it good for?

I would recommend getting an apron-front sink for people who are looking to make your kitchen sink a stand-off visual element rather than simply an accessory that blends with your current kitchen. There is nothing quite like having a protruding kitchen sink made of gorgeous, high-quality material that says luxury and class. 

The apron-front kitchen sink is versatile and can fit homes that are looking to achieve a modern, chic look as well as a more traditional laid back look. Apron-front sinks are available in white and gray amongst others, and can contrast with the rest of the countertop to help your kitchen sink stand out even further. 

The apron-front sinks are large and deep, making it a great choice for larger families with small children. The deep sink allows not only large skillets and pots to washed easily, but also bathing small children in the sink is no issue as well. For users who have a backyard or garden, apron front sink allows easy washing of gardening tools plus goes great with the backyard.

Key features of the Kohler K-6487-0

The Kohler K-6487-0 Whitehaven Self-Trimming Apron Front Under-Mount Single-Bowl Kitchen Sink is a cast iron kitchen sink manufactured by Kohler, a leading kitchen sink manufacturer that has been around for over 145 years. The sink itself is 29 inches wide and 9 inches deep, making it sufficient for medium-sized households. The fireclay material makes this sink highly durable and a strong choice for people who use large and heavy pots during their cooking.

The self-trimming feature is not only useful to reduce cabinetry work and interior support, but also more affordable. Traditional farmhouse sinks used to cost an arm and a leg but this sink is well-priced for a high-quality fireclay sink and from a trusted brand with a long history.

The enamel layer over the cast iron helps further enforce your sink by protecting it against cracks and dents. The glossy finish over the kitchen sink makes maintenance easy. Simply use hot water, mild soap and a wet cloth to keep your kitchen sink looking brand new.


  • Deep sink at 9 inches makes it easy to wash and hold larger pots and pans
  • Self-trimming feature makes the sink lighter and affordable, minimising cabinetry work and interior support
  • Cast iron sink makes the sink highly durable, often allowing it to last for decades
  • Enamel layer over cast iron protects the cast iron surface against cracks, rust and allows easy cleaning
  • Enamel layer gives a wide variety of colour choices to choose from
  • The product is manufactured in the USA


  • The sink is made of fireclay which is tends to be pricier and exceed the budget of users looking for functional, affordable sinks
  • Enamel coated cast iron sinks can chip, revealing the colour of the cast iron and making it aesthetically displeasing

Features and Benefits of Kohler K-6487-0

Company – Kohler

Kohler is a company that has been around since 1873, best known for their plumbing products while also specialising in furniture and cabinetry. 

With over 32,000 employees, Kohler is a household name that manufactures products distributed all around the world. 

Among other things, they are well-known for their capabilities in manufacturing cast iron products for home and bathroom fixtures. With such a long history, Kohler is one of the leading brands and go-to place for cast iron fixtures.


The sink is great for people who large cooking equipment such as  large colandars and deep pots. The sink is 29” wide and 9” deep, which is suitable for households to host small dinner parties.

The sink has a downward sloping base which allows water to drain off easily, making cleaning an easy task. For households who love to want to maximise their kitchen space, the drainer is placed off to the side which lets you utilise the space in the lower cabinetry.


The sink is well packaged and protected during delivery, with only a few customers complaining of instances where the sinks came damaged or chipped. For the cases where delivery was poor, the company offered to replace the sink at no additional cost which is highly reassuring.


The cast iron sink comes in pure white and has no signs of discolouration (some lower quality cast iron comes with blue or green cast). The enamel layer over cast iron sink gives the sink a shine and glossy look, which paired together with the white colour makes the piece look stunning. 

The classic white cast iron sink pairs perfectly with numerous countertop surfaces, but I particularly like the pairing with a darker, textured countertop such as granite or marble. 

This sink is an undermount sink, which means that the rims of the sink lie beneath the surface of your countertop, giving it an additional layer of sophistication that I personally love. 


The cast iron sink has a commercial-grade enamel layer over the cast iron, giving the kitchen sink a smooth and reflective surface. 

The sink is also protected against wear-and-tear such as scratches and rust, while improving the general durability of the product.


This sink comes with a large variety of colours ranging from different shades of gray, black and the classic white.

However, all the variations available for this product is only suitable for undermount and has to be installed as an apron-front. For a great fit, the sinks should have at least a minimum 30-inch base cabinet width fit and a 36-inch base cabinet for a perfect side-by-side fit.


The installation of this sink is rather simple, with templates and manuals available. The sink weighs about 122 pounds so some cabinetry support may be necessary. The sink is rather large and heavy, so we recommend getting a family member or friend to help with the installation.

Most of the users who have purchased the sink decided to do the installation on their own, and none of them experienced difficulty in doing so. 

If you’re unsure if your current set-up can fit and support the sink, do consult your local professional plumber or interior designer.


While doing further research on the product, I found some user reviews from past purchasers and they seem rather positive. Here are some of what I found:

Alternatives Kitchen Sinks

If you’re still not quite sure if this is the sink that you’re looking for, here are some alternatives that you can consider.

Ruvati 33-inch Apron-front Workstation Farmhouse Kitchen Sink 16 Gauge Stainless Steel Single Bowl – RVH9200

This workstation sink functions has an apron-front mount, but is made of high-quality stainless steel and is an excellent alternative for people looking for a functional yet aesthetic kitchen sink. 

The workstation includes a wooden chopping board, deep stainless steel colander and dish-drying roll-up rack that allows you to work over the sink and maximising your working area. The weight of the stainless steel is light so in-built support is not required. 

This kitchen sink would fit in kitchens looking to achieve a contemporary look and is great for maximising countertop space. The included accessories, combined with the lower price of stainless steel and lightweight makes this an affordable choice for households who are looking for an affordable apron-front option.

BOCCHI 1138-001-0120 Classico Apron Front Fireclay 30 in. Single Bowl Kitchen Sink with Protective Bottom Grid and Strainer in White

The Bocchi 1138-001-0120 fireclay kitchen sink is another popular, high-quality product available in the market. Similar to the Kohler K-6487-0, this sink has a smooth exterior and is made of a very durable material, fireclay. 

Fireclay is the most common material used to make apron-front sinks due to it’s distinct white colour, but enamel layered cast iron is a close alternative. The main difference between the 2 is that fireclay is more prone to chipping if your household has heavy usage due to the lack of the protective enamel layer. 

However, chips in fire clay sinks are less obvious since the entire sink is made up of the same material and colour as compared to cast iron sinks.

If you’re looking for a sink that still maintains it’s look upon wear and tear without much maintenance, this is a great sink to consider.

ZUHNE Turin 33 Inch Farmhouse Apron Front 60/40 Deep Double Bowl 16 Gauge Stainless Steel Kitchen Sink with Grate Protector, Two Drain Strainers and Sink Caddy

Apron-front sinks usually come in a single bowl configuration, but this Zuhne Turin stainless steel sink is perfect for those who love the convenience of a double bowl. The 16 gauge stainless steel sink comes with everything you would expect in a high quality product – sound-dampening technology, slightly rounded corners for easy cleaning and a lifetime warranty with free returns.

With a 10-inch depth and high-quality 16-gauge stainless steel, many users love how the sink is easy to clean and fits large pots and skillets. The double-sink farmhouse sink combination makes this product unique and difficult to find at this quality and price.

Latoscana 30″ Reversible Fireclay Farmhouse Sink LFS3018W

The Latoscana 33” Kitchen sink is one of the most popular farmhouse sinks in the market and it’s not surprising how it made it to the top. A unique aspect of this sink is that it is reversible – with one side being completely smooth and the other having a fluted design – allowing you to choose from 2 designs in 1 purchase.

Many past purchasers complemented how this sink is of a high quality but priced lower than other fireclay sinks in the market. Other users love how this sink is very resistant to chipping and cracking, preserving the chic look for months after the purchase. 

For people looking to have a classic display piece in their kitchen, this sink is a great alternative to the Kohler K-6487-0.

Also check out : 5 Best Farmhouse Sinks in 2019 for your new home


All in all, the Kohler K-6487-0 Whitehaven Self-trimming undermount kitchen sink  is a standout piece that helps any kitchen stand out from the rest. The long history and experience of Kohler as a cast iron manufacturer makes it unsurprising that this model is one of it’s top sellers. 

I would recommend this sink for both new homeowners and homeowners looking to remodel their kitchen due to the quality, ease of installation (made easier with self-trimming) and price. 

Hope you enjoyed this review and be sure to check this product out for yourself!

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