Made of high-quality tempered glass， this sturdy 11" x 11" (28x28 cm) glass lid is designed to fit the Swiss Diamond Square Saute Pan， Square Grill Pan and Square Casserole. The same lid can be used for standard and induction collection cookware. While a perfect fit is not guaranteed except with Swiss Diamond cookware， this universal cover can also be used on any 28cm square pan. The lid knob features an adjustable steam vent that can be opened and closed to control moisture while cooking. It has a stainless steel rim for a high-quality fit. Oven-safe up to 260 C (500 F). To prevent damage， do not expose the glass cover to rapid temperature changes such as immersing a hot lid in water.Ergonomically designed for comfort and balance， Swiss Diamond heat-tempered glass lids feature an adjustable vent to release or contain stem， ensuring food cooks perfectly.