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Undermount Stainless Steel Sinks
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Undermount sinks are securely mounted with fasteners beneath the sink cut-out. The exposed edges of the counter top are finished so they are even with the bowl of the sink. A popular benefit of the undermount sinks is the ability for fast, easy cleanup. You're able to wipe debris from the counter directly into the sink or disposal, without crumbs catching on the edge as they might with a topmount sink. Before installing, make sure that your counter's edges are finished to provide a sleek, seamless look to your sink area. Whatever sink size you are looking for, we're sure to have it in an undermount style. Choose from double bowl, single bowl, faucet accommodating, noise reducing, and many more. Most of our sinks ship free of charge in the continental U.S. Undermount stainless sinks are perfect for commercial or home kitchens - shop for your sink today!

With their sleek, modern appearance, stainless steel undermount sinks look stunning in a variety of settings and greatly add to the beauty of any bathroom, kitchen or bar. The style of sink has grown in popularity in recent years, leading manufacturers to offer under mounted sinks in a variety of styles and shapes.

If you're getting ready to replace your current sink or embarking on a new construction or remodeling process, an undermount sink may be perfect for your home. We created our Buyers' Guide to Stainless Steel Undermount Sinks in response to the most common questions that we receive from customers exploring the ranges of sinks available from today's top manufacturers. By reading the guide, you'll get a thorough education in all of the terminology associated with this style ofsinks. You'll also learn about the differences between styles and get tips on how to make sure the model you pick will be ideal for your home and your personal needs and tastes.

What exactly is an undermount sink?

This style of sink is a plumbing fixture that is fitted into your cabinetry by installing the piece underneath the counter top. The style contrasts with topmount sinks, which are placed atop your counter top. The style ofsink has no lip or edge that fits over the surrounding counter top area. Once installed, the entire fixture will be fitted down inside the opening in the counter tops.

What are the benefits of this type of sink?

The aesthetic appearance of thesinks is one of the style's biggest benefits. Many homeowners prefer the tucked away look of the this style ofsink to topmount styles, and as a material, stainless steel has a clean, modern appearance that many find appealing.

Since undermount sinks don't have a lip that sits atop your counter top, there is one less surface area to keep tidy when you clean your counters. In addition, when you are cleaning up the kitchen, you can easily brush crumbs and debris into the sink with a wet or dry cloth.

Will an undermount style work with any counter top?

Because they fit underneath the counters, the sink style can only be used with a solid counter top, such as granite or stone. You won't be able to choose the style if you have laminate counters in your home. Also, the sink will not cover any defects or worn edges in your counters the way a topmount style can.

What styles of undermounted sinks are available?

Manufacturers produce the sinks in eight primary styles.
  • D Bowl sinks have mostly square or rectangular shapes with either a rounded front or back that makes it resemble a sideways "D".

  • Rectangle sinks measure the same across their fronts and backs. Their sides are also of equal length to one another and may be longer or shorter than the front and back.

  • Round sinks are perfectly circular in size.

  • Bar or Prep sinks are typically much smaller in size than other sinks and may be rectangular or slightly curved. They are typically used in wet bars or smaller food preparation areas.

  • Oval sinks have a rounded shape, but are stretched to have either a longer length or a longer width, depending on their orientation

  • Square sinks have four sides of equal length

  • Double bowl sinks combine two bowls side-by-side. The bowls may be identical in size or shape or different from one another.

  • Apron sinks are placed in cabinetry in cutaway fronts and have a stainless steel surface or apron that is visible when viewed from the front.


How do I know what size of a sink I need?

For new construction projects and for remodeling projects where you are completely replacing your cabinets, consult the plans or your contractor for the specific size sink that will fit into the opening in your counter tops.

If you are replacing a sink, you can quickly find out the dimensions of your current sink with the help of a tape measure. For rectangle, square, and D bowl styles, first measure the distance across the front of the sink. This will give you the length, the first dimension that you'll see listed in product descriptions. In an oval style, measure from the widest point on the right to the widest point on the width, to obtain the length.

To get the width, the second listed dimension, in a rectangle style, measure from one front corner to the back corner directly above it. For an oval or D bowl style, measure from the center of the front to the center of the back. If you have a square shape sink, the width will be equal to the length.

For circular sinks, you'll only need the diameter. To get this measurement, obtain the distance from any point on the sink to the point directly across from it.

What is the taper of a sink bowl?

The taper of a sink bowl relates to how steeply the metal slopes from the top of the sink to the drain. A higher number indicates a larger slope. In turn, the larger the slope, the more space there is within the bowl. If you compare two bowls that have every other measurement identical but different tapers, the fixture with the greater taper will hold more water.

What is the depth of a sink bowl?

The depth of a sink bowl represents the height from the bottom of the sink bowl to the top of the bowl. Manufacturers measure this dimension from a spot immediately adjacent to the drain rather than right at the drain depression. Like the taper, a greater depth indicates a bigger bowl and a larger capacity than a sink with a smaller depth but otherwise equal dimensions.

What is the corner radius? What is a zero radius sink?

Most sinks are slightly rounded at the lower corners where the sides reach the bottom of the sink. Because of this rounded shape, there is a small amount of lost space that does not hold water. The corner radius measures the distance from the corner to where the bottom of the sink straightens out. The larger the corner radius, the more wasted space there is in the sink bowl. When you compare two sinks with identical depths and tapers, the sink with the larger corner radius will hold less water than the other.

A zero radius sink is one in which the bottom and sides intersect at perfect 90-degree angles. These angles create no wasted space and therefore have a zero radius.

Do I need to worry about the location of the drain? Does it really matter?

The location of the drain in your sink will determine in what part of the bowl water will be the deepest when you fill it. In a bar or bathroom, this may not matter as much as in a kitchen, where you will be using the sink to wash large loads of dishes.

Smaller utensils will tend to drift to the lowest part of your sink, so some people prefer to have a drain located more toward the front of the fixture to keep these items within easy reach. Others prefer the drain toward the back, so that the deepest point lies beneath the faucet to give more water for washing large pots and pans.

What does the gauge of the sink mean? Does it matter what gauge I buy?

The gauge of a stainless steel sink tells you how thick the sheet metal used to make the sink is. Thicker steel has a lower gauge number and is stronger than thinner sheets with higher gauges. For sinks in home settings, typically 14 to 20 gauge steel is strong enough. If you are purchasing a sink for a commercial setting where you will be washing heavy tools or equipment, a 14 or 16 gauge stainless steel sink may be ideal.

Does it matter what type of steel there is in my sink?

As you shop for sinks, you'll encounter Type 304 steel the most frequently, but you may see other types like 300, 301, 302 or 303. All of these types of stainless steel are austenitic, meaning that they consist of iron, carbon, 12 percent chromium and a trace alloy of either nickel or manganese. Austenitic steel types all have similar properties and are perfect for use in sinks for homes and most businesses.

Are there different finishes available? Which one is best?

For sinks, the No. 4 brushed finish is the most common. This finish does not reflect light and has a matte appearance. The benefit of a brushed finish is that it shows less smudges and fingerprints than more reflective styles, so it is easier to keep looking spotless.

You will find other finishes available from today's manufacturers. The No. 6 or satin finish is seen in some models. This finish reflects a small amount of light, but not evenly across its surface. The No. 7 or near-mirror finish has a nearly even reflective surface, while the No. 8 finish is a true mirrored look with full reflectivity. Keep in mind that the higher the finish number, the more smudges and fingerprints will be visible.
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