Bug Screens on Vents

I've used those screens successfully on two different fivers. They DO keep the mud daubers out. That's only so the buggers don't build their nests in the burner assembly which makes the unit inoperable until they are cleaned out. I went for years doing that occasionally until I installed the screens.

I would not think it a good idea to use regular screening material. The exhaust has high heat and would damage any screen that wasn't as heavy duty as these.

The screens don't need to keep mosquitoes or other bugs out since they can't get the your living area through those vents.

Phil

Air/fuel ratio is critical on RV propane appliances.......that is why mfg. doesn't provide them OR recommend them.

That being said.......
IF using the aftermarket ones......make sure you keep them clean/clear.
Fine mesh would keep you busy cleaning

I did cut and tape screening material in my refer vents.A good idea I think.

Use metal screen, not fiberglass screen - speaking from experience...

My camping buddies had the mud daubers build a nest in their motorhome's furnace. They took it to Camping World, and supposedly they cleaned them out. First night they had to use the heater, the MH started to smell, and the CO alram went off. An RV tech down the road came, and had to completley pull the heater out of the MH to get to all the nests. Fortuneatly, CW refunded my friend her money, since they didn't do the job right. But, ask yourself if you want to have your heater pulled out for nothing other than to have mud dauber nests cleaned out, when you could have just used that $10 screen. I have them on my furnace and water heater. Probably should put them on the fridge too, but those covers are easy to get off and inspect for nests.

Oh, and in addition to not using regular screen door type screen or fiberglass screen, do not use sun screen. :-)