How do you measure sink drain hole?

Asked By: Thays Platon | Last Updated: 19th March, 2020
Category: style and fashion bath and shower
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Measure the Sink
Measure that opening to ensure you get the right size drain, or check the manufacturer's instructions that came with the sink, as they should include the corresponding drain size. Most drain openings are 1 1/4 inches, although 1 1/2 inches and 1 5/8 inches are also common sizes.

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Keeping this in consideration, what are the holes in the sink drain?

Overflow. One of the main purposes of the side holes is to prevent against a flooding sink. When the water is rushing into the sink and overwhelms the main drain, the holes help drain water that has reached the top of the basin.

Furthermore, how do you measure the diameter of a sink drain? A standard kitchen drain is 3 1/2 inches in diameter. This is the measurement across the center of the drain, from one side to another. The drain strainer, the bowl-shaped piece inside the drain mouth, matches this dimension. It is designed to sit inside the drain mount and seal it closed when flush to the drain bowl.

Secondly, how do you measure sink plug holes?

Finding the Correct Sink Stopper Otherwise, just measure across the center of the opening with a tape measure. If there is a stopper in the sink already, measure the top of it or remove the stopper and take it to a local hardware store.

What size is a kitchen sink plug hole?

Standard size sink plugs are 1 3/4 inch for kitchen sinks and baths and 1 1/2 inch for bathroom sinks.

26 Related Question Answers Found

What is the hole in bathroom sink called?

Bathroom sinks and some other fixtures include an overflow opening in the basin. This opening is located on the wall of the basis nearest to you, near the top of the basin. The overflow opening serves two important functions: The overflow allows the sink to drain faster by introducing air into the system.

What are the three holes in a sink for?

Depending on the design of your sink, it may have one, two or three holes, and they may appear between the faucet valves, facing toward you, or under the near rim, facing the mirror. They serve two functions: to prevent an overflow with the drain stopper engaged and to provide an escape route for air in the drain.

What is hole in sink for?

Hole in sink: Explained
They serve two functions: to prevent an overflow with the drain stopper engaged and to provide an escape route for air in the drain. Without this hole, a full basin of water would drain slowly because of the resistance it puts on air escaping up from the drain.

Why do kitchen sinks have 4 holes?

When it comes to kitchen sinks, most come equipped with one to four mounting holes. The more holes the sink has, the more faucet features they can accommodate.

Why does drain pipe have holes?


With the perforations facing down, the primary function is collection and distribution. Even when placed in a ground gutter as described above, the pipe fills with groundwater more quickly. When more water enters one area than another, it flows to another area of the pipe and drains away.

Where does the overflow drain go?

Overflow Structure
The main drain is at the bottom of the tub and the overflow is a few inches below the rim. Both drains are connected to tubes which meet beneath the bathtub and merge into a single pipe.

Are plug holes a standard size?

While a bathroom sink's design and overall size may vary from one model to the next, the drain holes are fairly standard, 1.25 inches being a general standard, with widths of 1.5 inches and 1.625 inches also common. The size of the hole helps determine which size drain is needed for that particular sink.

What is standard sink drain pipe size?

Pipe Size. Some older sinks may have drains that connect to a 1 1/4-inch tailpiece, but most modern drains have a 1 1/2-inch outlet. All the pipes that connect to the tailpiece, including the P-trap assembly and all the horizontal extensions, are either 1 1/4 or 1 1/2 inches in diameter.

Are all sink drains the same size?

« All Kitchen Sink Basket Strainers Are The Same Size, 3 1/4" In Diameter » Let me start by saying that all kitchen sink drains openings (hole) are a standard 3 1/2" in diameter and all kitchen sink drain basket assembly on the market are 3 1/4" in diameter.

How do you measure a bathtub drain stopper?


Measure straight down from the center of the overflow to the point at which the drain is mounted to the tub: depending on what's easiest to get to, you can measure from outside the tub down to its underside, or from inside the tub to the tub floor. Do not follow the curve of the tub; measure straight down.

What is the standard size of a bathroom sink?

In general, standard oval and round bathroom sinks have a diameter of 16 to 20 inches and an average water depth of 5 to 8 inches. And standard rectangular sinks measure 19 to 24 inches wide (side to side) and 16 to 23 inches length (front to back).

How is pipe size measured?

Measure the Outside Diameter (OD) of your pipe or pipe fitting:
  1. Wrap a string around the pipe.
  2. Mark the point where the string touches together.
  3. Use a ruler or measuring tape to find the length between the tip of the string and the mark you made (circumference)
  4. Divide the circumference by 3.14159.

Are there different size P traps?

When replacing a P-trap, you should use the same type of trap you remove. Traps are made from ABS (black), PVC (white) or brass (either chrome-plated or natural colored). Traps come in 1 1/4 inch (standard bathroom sink) or 1 1/2 inch (standard kitchen sink) inside diameter sizes.

How far below the sink should the trap be?

According to the International Residential Code, the maximum vertical distance between the sink drain and the entrance to the p-trap is 24 inches.

Are bath plugs the same size?


Sizes of Bathtub Plugs
Bathtub drains usually have a standard size and you can easily find a replacement bathtub plug for your drain. If you think your drain is larger in size though, you will have to take out the drain using a screwdriver.

How do you measure a kitchen sink strainer basket?

If measured at the bottom where the rubber stopper part is it's 2 inches. If measured at the top of the basket it's 3 inches.