Corning Ware “Shadow Iris” (A-21-B) Lasagna Open Roaster Baking Dish (12.25″ x 1.5″ x 2.5″) Review August 17, 2018 No Comments this is a Corning Ware lasagna baking dish. It is done in the Shadow Iris pattern. It is numbered A-21-B. it measures 12.25″ x 10.5″ x 2.5″. Other Products Tupperware Ultra Pro Oval Oven Safe 3.5qt /3.3 L L... Fiesta Deep Dish Pie Baker, 10-1/4″, Slate R... Polish Pottery Paper Towel Holder – Crimson ... Polish Pottery Baker – Rectangular with Grip... Tags: Bakers, Bakeware, CorningWare, Home & Kitchen, Kitchen & Dining