This EPD is carried out for the Unilin Hytherm SD, Hytherm HD and Warm-R Premium products. The raw material for the Hytherm boards is white expandable polystyrene (EPS) beads; the raw material for the Warm-R Premium boards is grey expandable polystyrene (EPS) beads. The insulation products are manufactured in accordance with I.S. EN 13163, “Thermal insulation products for buildings. Factory made expanded polystyrene (EPS) products. Specifications”. Further technical information can be obtained at https://www.xtratherm.com/ranges/eps/.