The Renaissance Cooking Systems - Insulating Liner for 30" Cutlass Pro Built-In Grill Ensure the protection and safety of your outdoor kitchen with the RCS Gas Grills Insulating Jacket. Many outdoor kitchens are built with combustible materials. The RCS stainless steel insulating jacket protects not only the outdoor kitchen from the heat your grill produces but also the grill from corrosion adding to its lifetime. Each grill insulating jacket features durable double-lined 304 stainless steel construction for maximum strength and protection. Cut Out: 43 5/8" Wide X 21 1/4" Deep X 12 1/4" High Required when installing a grill into a cabinet constructed with combustible materials.