NapoleonZeroClearanceLinerfor700Series BIG44 Built-InGasGrills - BI-48...Napoleon Zero Clearance Liner for 700 Series BIG44 Built-In Gas Grills - BI-4823-ZCL. BI-4823-ZCL. Insulated Grill Jackets. This 44-inch Zero Clearance Liner is specifically designed for use in custom outdoor kitchens. Designed to fit the 44-Inch...more