Wasps, mud daubers and rodents pose a serious threat to the furnace on your RV. They can enter through the refrigerator vents and cause serious damage by building nests that interfere with air flow. Camco 42154 (Model RS 800) insect screen fits Dometic refrigerator vents which have 8-1/8" louver openings. These easy to install screens will help ensure that your vents stay free from costly invasion by unwanted pests. Measures 8-1/8" x 1-1/2" fits Dometic refrigerator vents that have 8-1/8" long louver openings Measures 8-1/8" x 1-1/2" fits Dometic refrigerator vents that have 8-1/8" long louver openings Heavy-duty stainless steel mesh cover Pack of 6 Each screen attaches easily with two ties (included)