Reusable Aluminium Oven Liners catch overflows, grease and drippings. Fits all gas or electric ovens. Rust-proof, fire-proof and easy to insert. Use them to bake, roast, reheat and serve. When dirty, just toss them out and insert a new liner. Set of 10. Each 46cm x 40cm . For use on racks only - do not put directly on heating element.In electric ovens, oven liner should not come in contact with electric heating element. In gas ovens, oven liner should not be placed closer than 7.6cm from flame. Do not block heat vents in bottom oven plates. Caution: Some newer models of ranges have concealed element, oven damage may result if oven protector is placed directly on oven bottom. Consult your owner's manual for operating Instructions & compatibility.