10 1/4 lid.  So your pot or dish or pan inside wall to wall should be 10 1/4 inches

This glassware is compatible with induction, electric, and gas stoves and comes with a lid. The Visionware brand is known for its quality products, and this item is no exception. It is made of durable glass material and is suitable for cooking. Get this Visionware lid pot pan and enhance your cooking experience.