Are Toilet Flanges Standard Size

The ring has slots for the bolts that hold the toilet down.

Are toilet flanges standard size.

In addition a 4 x 3 toilet flange is the size of most closet bend pipes. These rings will prevent the toilet from properly recessing into the flange. 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. Some flanges just have one diameter typically 3 inches.

Once removed examine where your flange is resting. A 4 x 3 toilet flange has a four inch topside and a three inch bottom diameter. A few other flange sizes exist as well. The bottom of this size flange will fit standard sized drain pipes.

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 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. 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. If you are not certain about your toilet pipe size this flange would be appropriate to use.

Instead use a standard inch wax ring. This is the size of the flange opening and outlet. That is so the flange mounts to standard 3 inch drain pipe schedule 40 used in almost every residential home today.