Rigid polyurethane (PUR) foam in slab form. Specification for PUR foam for use in transport containers and insulated vehicle bodies|Freight containers, Fire-resistant materials, Compressive strength, Sheet materials, Thermal insulating materials, Water absorption, Dimensional tolerances, Fire safety, Vehicles, Cellular materials, Thermoplastic polymers, Linings (containers), Polymers, Foams, Vehicle bodywork, Shear strength, Containers, Grades (quality), Blocks, Thermal conductivity, Boards, Burning rate, Bulk storage containers, Polyurethane, Porous materials, Dimensional changes, Water-absorption tests, Slabs, Safety measures, Permeability, Tensile strength, Water vapour, Refrigerating plant, Fire resistance