What is the mounting height of grab bars?

For adult toilets per ADA requirements the mounting height to the center of the grab bar for both the side and back grab bars is between 33" for the bottom of the grab bar and up to 36" for the top of the grab bar.  For the 18" vertical grab bar ADA requires this bar to be mounted 39"-41" to the center of the grab bar from the back wall and 39" to 41" from the floor to the bottom of the grab bar. However, always check with your local codes to determine the exact placement.