I was recently reading this article.
It was about the proposal to produce a 160 seat version of the C300 by using 'slim'backed seats, removing a toilet and reducing seat pitch to 28".
However the issue seemed to be whether they would have to add additional overwing exits or not which would seriously hurt the economics of the standard version of the aircraft (weight). They appear to say that a "double exit" may be the way round that. Is that a double sized emergency exit door or something different?
Appreciate someones knowledge on door to pax ratios and exirs etc.