The Carlisle 3300642 Sierrus narrow rim salad plate is made of heavy-weight melamine for strength and resistance to breaking and temperatures up to 212 degrees F. This narrow rim salad plate meets NSF International standards for use in food handling and processing and is dishwasher-safe. Carlisle manufactures food service equipment and supplies and sanitary maintenance tools and supplies for commercial, industrial, and institutional facilities. The company, founded in 1954, is headquartered in Oklahoma City, OK.