The Renaissance Cooking Systems - Insulating Liner for 26" Premier Series Built-In Grill The RCS stainless steel grill liner jackets helps protect your outdoor kitchen from the high heat your grill produces. Custom made to fit RCS grills, each grill insulating jacket features durable double-lined 304 stainless steel construction for maximum strength and protection. Cut Out: 26" Wide x 22" Deep X 9 5/8" High Required when installing a grill into a cabinet constructed with combustible materials.