The Star Manufacturing Grill Express™ 20 inch Grooved Sandwich Grill (GX20IG) is great for diners and sandwich shops with a grooved two-sided grill with a surface of 10 inches by 10 inches. Cast iron plates are used to offer a durable product built to last. The Star - GX20IG - Grill Express™ 20 inch Grooved Sandwich Grill's hinge system makes operation simple and is designed for an even pressure that provides consistent heating. This grill is UL and NSF certified.