Valterra Bug Screen For RV Furnace Vent Fits Atwood Afmd Models. They are easy to install and offer minimal airflow restriction while ensuring that your vents stay free from costly invasion by unwanted pests (nesting insects birds and rodents). An installation tool and two spring fasteners are included with each bug screen. Screens should be inspected monthly and cleaned when necessary to maintain proper air flow. Screen measures 5.1" x 6.85" x 2.16". Features of Valterra A10-1305VP Bug Screen For RV Furnace Vent Fits Atwood Afmd Models Fits Atwood AFMD model furnace vents Ensures that your vents stay free from costly invasion by unwanted pests (nesting insects birds and rodents) Heavy duty stainless steel mesh cover Minimal airflow restriction Includes installation tool and two spring fasteners Package Contents: Valterra A10-1305VP Bug Screen For RV Furnace Vent Fits Atwood Afmd Models Valterra A10-1305VP: Bug Screen For RV Furnace Vent Fits Atwood Afmd Models