Broan LT30 30N T-Shape Hood Liner for PM250 and PM390, 30-Inch, Silver Especially designed to protect the exterior base of a custom hood Fits PM250 and PM390 inserts; 24 gauge CRS; painted silver finish Works with wood hoods that are integrated to the adjacent 12-Inch deep cabinets Fits custom hood nominal widths: 30-Inch and 36-Inch Durable silver painted finish and a 4-Inch depth for good capture