The Norcold 637318BK Refrigerator Vent is designed for use with Norcold 2118 series refrigerators. It offers a an upper exhaust, lower intake, and radius corners. Black plastic construction. Dimensions: 32. 5" length x 18. 75" width x 6. 5" height. Cutout Dimensions: 29. 3125" length x 13. 75" height.