A half-size foil pan typically refers to a specific size commonly used in cooking and baking. The dimensions of a standard half-size foil pan can vary slightly depending on the manufacturer, but they are generally close to the following dimensions:

• Length: Approximately 12.75 inches
• Width: Approximately 10.375 inches
• Depth: Around 2.5 inches

These pans are often used for a variety of purposes, such as roasting vegetables, baking smaller portions of casseroles or desserts, serving food at events, or even for disposable food storage.