How To Use: 1.Wiping off the water and dust on the ground. 2.Determining the position of the water retaining strip and mark it with a pen on the ground. 3.Remove the adhesive and install the water barrier in the marked position. 4.Seal the rubber strip at the position where the two ends of the water retaining strip are in contact with the wall. 5.Apply glue on both sides of the water stopper and apply evenly.(Not include glass gule, you can buy it in this link: Description: Material: Silicone Width: 30 mm Height: 51 mm Optional Color: White/Transparent Optional Length: 0.5/1/1.5/2/2.5/3 Meters Package Included: 1 x Water Stopper (Length & Color depends on your choice.)