ISS boasts one of the largest stock levels of around 4-5 million slates at any one time, offering un-paralleled purchasing power, which is passed to the end user through fantastic value for money. All our slates come with a declaration of performance (DOP’s) which means they have been tested to, and surpass the top UK tests for water absorption, thermal cycle resistance, and sulphur dioxide exposure. In addition, all our slates have been CE marked meaning they conform to EU regulations.