Wasps, mud daubers and rodents pose a serious threat to the refrigerator vents on your RV. They can enter through the refrigerator vents and cause serious damage by building nests that interfere with air flow. Camco’s Flying Insect RV Refrigerator Screen (Model RS 900) fits Dometic/Atwood RV refrigerators, which have 19-3/8" long louver openings. These easy to install screens will help ensure that your vents stay free from costly pest invasions. Screen size: 19-5/16" x 1-5/16"; made of heavy duty stainless steel Screen size: 19-5/16" x 1-5/16"; made of heavy duty stainless steel Keeps out nesting insects, birds and rodents with minimal airflow Includes (3) screens for Dometic/Atwood RV refrigerators Easy to install