Wasps, and mud daubers pose a serious threat to the water heater on your RV. They can enter through the water heater vents and cause serious damage by building nests that interfere with air flow. The Camco 42145 (Model WH 500) Flying Insect RV Water Heater Screen fits Atwood 6 and 10-gallon and Suburban 6-gallon water heater vents. This easy-to-install screen will help ensure that your vent stays free from costly invasion by unwanted pests. The screen measures 6-inches x 8 ½-inches x 1 5/16-inches. The mesh cover is made of heavy-duty stainless steel. Product is easy to apply and includes a tool for installation. Protects RV Water Heaters: Protects your RV's water heater from flying insect nests Protects RV Water Heaters: Protects your RV's water heater from flying insect nests Dimensions: The screen measures 6-inches x 8 ½-inches x 1 5/16-inches Construction: Mesh cover is made of heavy-duty stainless-steel Easy to Install: The screen is easy to install; includes tool for installation