Check the listing for details. Vintage CORNING WARE Roaster Blue Cornflower P-21 Dimensions 15x10x2.5. Color: White with Blue Cornflower, Condition: Used, Made in United States. Listed at 24.00 USD. This is a vintage Corning Ware oblong roaster in the iconic Blue Cornflower pattern, likely model P-21 (marking is partially worn). Measuring approximately 15 inches long by 10 inches wide and 2.25 inches deep at the rim, this piece was produced by Corning in the USA and features their signature glass-ceramic cookware that is microwave, oven, and dishwasher safe. Known for its thermal durability and timeless floral design, this roasting dish is perfect for baked entrees or as a collectible kitchen display item. There are surface scratches inside the tray from prior use and some mild discoloration on the underside. Please examine the photos closely. Sold as-is.