Are Toilet Flanges Standard Size

The bottom of this size flange will fit standard sized drain pipes.

Are toilet flanges standard size.

Instead use a standard inch wax ring. This is the size of the flange opening and outlet. If you are not certain about your toilet pipe size this flange would be appropriate to use. That is so the flange mounts to standard 3 inch drain pipe schedule 40 used in almost every residential home today.

Some flanges just have one diameter typically 3 inches. This award winning innovative product fits any drain size and flange depth and takes all the guesswork out of toilet installation guaranteeing a perfect seal 3x stronger than a standard wax ring the first time every time. In addition a 4 x 3 toilet flange is the size of most closet bend pipes. One common standard toilet flange size is 4x3 and this is the measurement you will find beside most flanges available at your hardware or plumbing stores.

A few other flange sizes exist as well. The ring has slots for the bolts that hold the toilet down. A 4 x 3 toilet flange has a four inch topside and a three inch bottom diameter. These rings will prevent the toilet from properly recessing into the flange.

The top section of the flange that connects to your toilet has a 4 inch diameter while the outlet below this has a 3 inch diameter. The top side of the flange which connects to the toilet is 4 inches in diameter while the bottom diameter of the pipe is 3 inches. The flange pipe can have a diameter of either 3 or 4 inches depending on the size of the waste line but a 4 inch hole works in both.