A-A-50179 Pans, with or without Covers, Food Serving, Rectangular, Soup Tureen and Round Inserts for Hot Food Tables and Cold Food CountersThis CID covers US standard gauge, stainless steel pans, non-perforated and perforated, rectangular, 12 inch by 20 inch series and pan covers of various sizes, soup tureens, and round insets for use in hot food tables and cold food counters. The perforated pans may also be used in steam cookers.