(User Guide: Correct installation is the key to safety. 1)✔ This Suction Grab Bar only works on tile size LARGER THAN 4"x4", 2)✔ The suction discs can not be mounted on grout seam(s). 3)✔ Make sure there's no texture on the shower wall, 4)✔ The mounting surface must be flat and smooth for any other applications.5)✔Safety test must be conducted before using the product.
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