I bought one from my dealer for the furnace vent, then I purchased heavy duty screening material. With a hot glue gun I was able to secure the screen material to inside the bumper caps, refrigerator vent, and the hotwater heater vent. 5 years now and the screens have help up just fine.
Joe, Joyce , 4 Kids and 3 Dogs.
2004 V-10 Excursion with Hellwig sway bar, Roadmaster Active Suspension, Bilstein shocks and steering stabilizer, Super Duty Tow Mirrors,
3.73 Gears, Reese dual cam, Prodigy brake controller.
2010 Jayco Jay Flight G-2 32 BHDS