Dan242 wrote:bobwhite215 wrote:I am going to run a couple of fresh air vents out thru the floor. Not sure exactly where yet though. Since they will exit under the floor, I'm not really worried about appearance. I think I am just going to use shower floor drains screwed to the bottom of the floor. Openings should be small enough to keep any varmints out.
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Maybe some screening to keep out insects...I plan on doing similar, but will incorporate fine screening to keep out bugs. I also will try to make the vent kind of a pyramid shape with screen on bottom and fan near top. This will allow surface area to compensate for the screening. the muffin fan will be slightly below the floor so I can make a flush cover for it
A Replacement Exterior Half-Moon Trailer Vent for 3" Diameter Hole or something similar, could be used to keep the rain out of a wall vent. I remember seeing photos of teardrop trailer doors with small clamshell vent covers installed in the top part of the doors to provide a little source of fresh air. Clam shell vents could be installed in walls or floors too.
Per Halfdome Danny's suggestion I'm going to install clam shell vents atop the side walls of my galley.