I have the 60001 model with two sets of doors and a window that opens on the back 10 ft side.  I would like to point out that my shed is installed on the end of a 10X18  deck that is about a foot off the ground.  One set of doors at the end of the shed and deck makes it easy to enter an use.  Also of importance is the fact that at the opposite end of the shed there are two small access ports at approximately 6 ft. high.  These two ports are made to use at entry points for electric lines.  Nothing is said in the info about them but they work really well for that access.