Fan-Tastic Fan framed in. I never like cutting holes in the roof, kinda like cutting holes in a boat bottom, So at first I thought I could put the fan in the wall, but it just wasn't working out. So, here it is framed in over where the galley sink will be. There is a slight curve to the framing, about a quarter inch top to bottom. I'll double up on the butyl tape when sealing the fan in place.
Some insulation and a little more work on the walls. See the framed square where I thought I could put in the exhaust fan? That was a weird idea. See the hole in the lower middle part of the side wall, It is a fresh air inlet for the air conditioner, the hot air will be sucked through the A/C and blown out the bottom of the ledge with a 70cfm squirrel cage blower.