Commercial Balcony Decking — WPC Decking This First Generation commercial-grade WPC board (profile 140x23mm, Seven-hole hollow, stable load-bearing) is engineered for balconies, terraces and light-commercial deck projects. As part of our first-generation outdoor flooring range, it is produced from wood plastic composite with a seven-hole hollow core for stable load-bearing with a slim 23mm thickness. The snap tongue-and-groove design allows glue-free quick installation, which