Standard Toilet Plumbing Size

There are generally accepted plumbing rough in measurements for sinks toilets and tub showers.

Standard toilet plumbing size.

Now you can find the perfect toilet. In the ipc toilet vents are 1 5 in the upc it s 2 inches. Not every toilet requires the same size hole and clearances also vary but there is a standard size and placement that works for most models. To connect the appropriate size vent into the hub of the 3 sanitary tee you ll need a flush bushing.

Standard toilet dimensions are typically between 28 30 deep roughly 20 wide between 27 32 high and have a rough in between 10 14. The outside diameter o d shown is for standard ips schedule 40 pipe pvc stainless brass steel etc. In addition fixture manufacturers typically provide rough in specifications in their product literature. Flush bushings kind of look like hockey pucks.

Standard toilet rough in common rough in sizes the standard toilet rough in is 12. What is the standard plumbing hole for a toilet. What size are toilet waste drains. I d say 80 of toilets have a 12 rough in so don t be surprised if you do as well.

Waste drain pipes for toilets in modern plumbing systems are either 3 inches or 4 inches in diameter. N ot for cpvc pex pb or copper pipe. The standard size for a toilet drain pipe is 3 inches in diameter but drains up to 4 inches in diameter are often used. The standard toilet dimension for rough ins is 12 inches but in some instances it may be 10 or 14 inches.

Standard pipe size info chart. In most homes pvc drain pipe is used instead of metal pipe. 12 inches is the most common toilet rough in size. 10 and 14 are also possible and you ll have a smaller selection of toilets that fit those sizes.

The drain pipe connects to the flange which mounts the toilet itself and this flange is usually built to connect to 3 inch schedule 40 toilet drain pipe. There are however other rough in sizes. More on venting a toilet here. This information can be found on the toilet s specification sheet.

Always check the standard dimensions against the manufacturer s specs to make sure they will work for your installation.