Camco Flying Insect Screen- Protects the Water Heater Vents from Flying Insect Nests, Stainless Steel Mesh, WH 500 -(42145) Screen measures 6 x 8.5 x 1.3 Heavy-duty stainless steel mesh cover Fits Atwood 6 & 10 Gallon and Suburban 6 Gallon water heater vents Protects the water heater from flying insect nests Easy to install, includes tool