... :333*333*13mm 2.Sports court flooring tile 3.Water-resistant,UV-resistant 4.Material: Virgin PP 5. Warranty ... holes, in fact ,we can say it is combination of water drain system and heat radiation system.SGB is for ... hot weater. When it rains, holes are to help water drain, When it is very hot, holes are to ... need to install it upon foundation, no need glue water and other assistant things.Thanks so much :o)