Keep wasps, mud daubers, and other nesting insects out of your RV furnace vent and water heater louvers. The Camco 42146 stainless steel insect screen installs in minutes with the included tool and provides long-term protection against the clogs and damage that pest nests cause inside your appliance venting.
A single mud dauber or wasp nest packed into a furnace or water heater vent can restrict airflow enough to trigger safety lockouts, cause incomplete combustion, or permanently damage the appliance. The Camco 42146 flying insect screen is a low-cost fix that fits directly over the exterior louver or vent opening, letting combustion air pass freely while keeping pests out for good.
Made from stainless steel mesh, this screen resists corrosion through seasons of rain, road grime, and UV exposure -- a must for an exterior-mounted component. Each kit includes one screen and a purpose-built installation tool that lets you press the screen securely into the vent opening without scratching the surrounding sidewall.
Rust-resistant stainless mesh holds up season after season on exposed exterior vents without corroding or sagging.
Fits Suburban furnace vent models 8535, 8531, 8525, 8940 DC, and 8940 AC, plus 10, 12, and 16-gallon Suburban water heater louvers.
Installation tool is included so you can seat the screen correctly against the vent lip without prying or improvising.
Also fits most standard RV battery compartment vents, giving you pest protection across multiple exterior openings.
Suburban furnaces and water heaters draw combustion air from the exterior vent. In warm-weather storage or during camping season, wasps and mud daubers are strongly attracted to the warmth and shelter these vents provide. A nest can form in as little as a few days and may not be visible from inside the rig. Symptoms include:
Installing the Camco 42146 screen takes about five minutes and eliminates this failure mode entirely. It is one of the highest-value maintenance items you can add before storing your rig or heading out for the season.
This screen is sized specifically for the 10" x 7-1/2" vent opening common to the Suburban appliance family. Verify your existing vent opening dimensions before ordering if you are unsure of your model. The compatible Suburban models confirmed by Camco are listed in the specifications table.
No special tools beyond the included installation tool are required. General process: