The Derby EngineSHed kit. 2 Lane sinle length
 
All dimensions are in the data sheet picture.
 
Full YouTube instruction tutorial available. 
 
Very detailed, very realsitic and far easier to construct than you would think.
 
Multiple elevation layers create the true depth of the window reveals.
 
Easy to combine extra sheds in series to create what ever length you need.
 
A glazing pack and downspout kit is available separately.
 
The roof features fully structural trusses.
 
The gables use Modelux Inviseam - this features internal piers and then the Invisieam outer laminate to allow robust construction, with necessary depth, without seeing unsightly join seams.