Size: 3cm (H) x 1.6cm (W) - This is a 3cm low water dam, can be used as a shower threshold for frameless shower door, prevent water leakage from the bottom of the door. It can also be installed around the sink and bathtubs to prevent water from falling onto the floor. Easy to install: Clean and dry the surface, remove the adhesive strip and press it onto the surface. To strengthen the fixation and waterproof effect, you can use the transparent silicone sealant to seal the bottom edge after the glue. Must caulk all the way around the edges or joints to prevent water leakage (for better adhesion, you can use the tape with hair dryer. warm up) Premium Silicone: The bumper bar is made of soft silicone, can be cut to the desired length with the knife, safe, durable and waterproof, resistant to high and low temperatures. Easy to clean and maintain, just wipe it with a damp cloth. Widely Uses: The water barrier can be stuck on almost any smooth surface, including walls, floors, tiles, etc.