by Ira » Thu Jan 25, 2007 8:56 am
Yeah--14 1/4" opening, and doubled up if you're using 1 by 2s. (You need that extra lumber around the opening to screw into.)
Otherwise, when trying to screw the vent in, your screw will just go into the air. Has to do with how the flange on these vents are made, and they all seem to be the same, regardless of the brand.
(Side note: I doubled up ALL of my 1 by 2 spars for a 1 1/2" square spar. It's like a TANK!)
As far as the rest of your spars go, the sky's the limit for you. I guess you should first decide where you're going to place your bulkhead walls, which will define the rest of the galley layout, more or less. Once the upper wall is in, you'll know where to put that last hatch spar, which you should TRIPLE up since it supports the hatch. Some guys double 'em up, I did FOUR, but you should at least do 3 because of your width.
Where are you running your wires?
Here we go again!