Camco 42161 Refrigerator Vent Base (White) Go to amazon.com Related posts Top 6 recommendation recreational vehicle refrigerator FeatureReplacement RV refrigerator vent baseUV stabilizedMade of durable polypropylene plasticWhitePatented DescriptionCamco's RV Refrigerator Vent Base is a replacement vent base for vents on top of the RV. It is made of UV stabilized, durable polypropylene plastic.