Aluminum alloy construction Durable and unbreakable 100% food safe Unique square shape for maximum space efficiency Safe for use at temperatures of -20‘ F up to 650‘ F Superior conduction keeps hot food hot and cold food cold Perfect for serving a fresh tossed salad To clean, use only metal safe detergents and sanitizers Do not scour or scrape Lifetime body guarantee against breakage Pewter Glo products can be refurbished to their original luster NSF listed 18" x 18" x 5 3/4" 7 1/4 Gal.