Polar White Air Intake Side Refrigerator Vent (620505PW) by Norcold®. This is a lower, outside vent for Norcold refrigerators. The cut-out-dimensions of the hole should be 17 13/16" x 6 3/16". Norcold prides itself on creative design and is committed to the production of high-quality products which exceed the needs of a demanding marketplace. Norcold products include product...