Regular Roof Carport/Garage, there is no side to side overhang, but there is a 6" overhang on the front and back ends.
Boxed Eave Carport/Garage, there is a 6" overhang on the front and back ends, and roughly 6" overhang on either side as well.
Vertical Roof Style Carport/Garage, that is 30' wide or skinnier, there is a 6" overhang on the front and back ends, and roughly 6" overhang on either side as well.
Vertical Roof Style Carport/Garage, that is 31' wide or wider, there is a minimal overhang on all four sides. This style/size is considered to have "no" overhang, as the overhang is quite small.