Is there a particular standard of Door that should be fitted to a final exit? I have come across a set of double doors on a final exit which, are nothing more than shed doors which can't accommodate a push bar!

Most final exit doors do not require to be fire resistant so any type of door can be fitted and only in certain situations a push bar fastening is required to be fitted, were large number of people are likely to attempt to pass through the door, like public entertainment premises, (cinemas, theatres, clubs etc).