Wasps, mud daubers and rodents pose a serious threat to the refrigerator on your RV. They can enter through the vents and cause serious damage by building nests that interfere with air flow. Camco 42158 (Model RS 610) Flying Insect RV Refrigerator Screen fits Dometic refrigerator vents that have (3) 20-inch long louver openings and (6) 2-5/8-inch long louver openings. These easy to install screens will help ensure that your vents stay free from costly invasion by unwanted pests. Protects Refrigerator Vents: Protects refrigerator vents from flying insect nests Protects Refrigerator Vents: Protects refrigerator vents from flying insect nests Compatibility: Fits Dometic refrigerator vents that have (3) 20-inch long louver openings and (6) 2-5/8” long louver openings Construction: Mesh cover is made of heavy-duty stainless-steel Easy to Install: The screen is easy to install