Yes Dave, thanks - The 2nd exit window does look like it there but deactivated, handy for resale or re-configuring seats - These new windows are larger than the 319/320 ones - and the main doors have double lane slides to enable the max of 240 seats if ALL exits ARE active.
Indeed,
EZY & some charter airlines chose to have 4 exit windows on their 319's to enable 156 seats (144 or 150 with only 2)