Are Toilet Flanges Standard Size

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.

Are toilet flanges standard size.

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. Some flanges just have one diameter typically 3 inches. 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.

These rings will prevent the toilet from properly recessing into the flange. A few other flange sizes exist as well. In addition a 4 x 3 toilet flange is the size of most closet bend pipes. The ring has slots for the bolts that hold the toilet down.

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. 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. Once removed examine where your flange is resting. 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.

A 4 x 3 toilet flange has a four inch topside and a three inch bottom diameter. Instead use a standard inch wax ring. The first thing you ll want to do when replacing or readjusting the height of your flange to shut your water off and remove the toilet from the floor.