You can add grab bars if you have a shower unit that has age-in-place backers. The age-in-place backers provide support for the grab bar and will support you if you fall.
If you have a unit without age in place backers, the wall material will not have enough support; if you accidentally fall and use the bar to catch yourself, the bar could come out of the wall.
Refer to the Specification Sheet for the shower unit to determine backer location.
