Cambro CamSquare Food storage container color is made of polypropylene for durability and has a capacity of to store products. Container measuring 7 1/4" x 8 3/8" withstands temperature of range -40 to 160 deg F. Polypropylene. 7 1/4'' H 8 3/8'' W Cap. Translucent plastic, Easy-to-read graduations, Withstands -40Degree Fahrenheit to 160Degree Fahrenheit. Polypropylene. 7 1/4'' H 8 3/8'' W Cap. This graduated container from Cambro features Translucent plastic, Easy-to-read graduations, Withstands -40Degree Fahrenheit to 160Degree Fahrenheit. It is made of Polypropylene.