Polyurethane products are widely used in the form of foams, in upholstery fabrics in commercial and domestic furniture. Polyurethane products are used in the metal and plastic walls of most refrigerators and freezers. Polyurethane products are behind paper, metals and other surface materials. Polyurethane products are used in the case of thermal insulation panels in construction sector. Polyurethane is also used for moldings such as door frames, columns, balusters and window headers and pediments. Polyurethane foam is widely used in seals and gaskets, durable elastomeric wheels and tires, carpet underlay and for electronic instruments. Polyurethanes are used to make automobile seats. Polyurethane is used in textiles in the form of spandex.