[sourdough]

The screens work but I would make one caution; I placed them on the furnace exhaust (among other things) of our last trailer. I immediately began having issues with the furnace shutting down (Atwood - winter time) after running for several minutes. After working through it I removed the new exhaust screen and everything was fine. Replaced and it began failing. The screen (fairly fine mesh) was enough to block some of the exhaust and cause a heat buildup making the limit switch shut it down. Seemed unbelievable to me but it did it. Just fyi in the event you place them and experience something like that.