These Rectangular Foil Containers are made from heavy thick aluminium foil, what makes them ovenable, able to stand to high temperatures, has excellent conductivity, non-toxic and moisture resistant, which all this combined keeps food inside warm for much longer. Popular for take-away food, catering industry, meals on wheels, grilled food and also widely used for baking. Ideal to be used in conjunction with our Gastronorm Foil Lids.