Size of the dam: 100*30*48cm. It can be easily cut to the length you need. The long, flexible design creates all kinds of shapes. The shower barrier and retention system hold the water inside the threshold. Ideal for curbless showers and other areas where water needs to be contained. Customer Note: to make the product more stable, please follow the installation instructions to install the water retention strip. Installation steps and attentions: (1) D first, please clean the floor thoroughly and keep it dry. This step is very important (2) Next, determine the installation position of the water retaining strip, and then mark it on the ground with a pen. (3)Remove the adhesive tape on the back of the water retaining strip and stick it on the ground according to the previously marked position. (4)Then use glue to fill in the area where the two ends of the tape contact the wall to seal it, and remove excess glue to make the contact smooth. (5) Finally, to prevent it from falls, let it dry within 24 hours and avoid contact with water. It can be easily cut to the length you need. White color Quantity sold: 1 piece Notice: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as the picture. 2. Due to different measurement methods, there may be an error of 1-3mm.