Ok..so I started the hatch project and I have a 13 x 32 hatch needing a 10-3/4 x 30 rough opening.
No problems cutting the hole it's a rough corner with water damage and outer wall delamination.
But...now I find I have not one but two lateral 1x2 aluminum rectangular tubing frame members! Great right? Except they are 8" apart vertically so I now either have to add external framing to attach the purchased hatch on to, or I need a 8" x 30" rough opening hatch door!
Suggestions welcome and stay tuned to my latest bit of drama! LOL...IMG_20180827_175624.jpg