Self-adhesive Water StopperKeep water inside the threshold: The shower threshold for the bathroom provides good protection and keeps water inside the shower stall, so do not worry about water damage. It could be applied to flat and smooth tile, glass, or ceramics and works perfectly on the outer rim of the shower pan and base. Can be cut at will: The shower water dam threshold size is 66 L x 1. 18" W x 1. 89 H. It is soft enough and can be easily cut to the length you need with