The Siniat Weather Defence Board is a highly durable and weather resistant construction board, ideal for external sheathing applications. It measures 12.5mm in thickness, 2.4m in length and 1.2m in width, providing a substantial surface area for large-scale projects. This product is renowned for its robustness and reliability, even in adverse weather conditions, making it a top choice among professionals. With 52 boards included, this bulk pack offers excellent value for your building needs.