JR Products 06-30185 Mud Dauber Screen for Furnace Vents and Battery Vents - 4-1/2" x 4-1/2" x 1-5/16"
1208.2197
$24.39
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Keep nesting birds and rodents out of your furnace vents and battery vents! This mesh cover does not restrict airflow, and includes the tool to make this install simple. Fits the following Atwood models: 2540, 8516, 8520,8525,8531,8535 and 8940, Suburban 6, 10 and 12 Gallon water heater vents, and most battery vents.