Short Wall Definition
Because most Living Quarter Trailers are Slant Loads, the "Bulkhead Wall" that separates the Living Quarters from the Stock Compartment is on a slant. If you have a Slant Load, one of the Living Quarter Outside Walls is Shorter in Length than the other Outside Wall. The distance from the Front of the Trailer ( where the Jack is located ) - to where the Bulkhead Wall starts the slant, is the "Short Wall" and even though the other wall is longer, industry says the size of a Living Quarter is determined by the Length of the "Short Wall".
If you have a "Full Mid Tack", the bulkhead wall that separates the Living Quarters from the Mid Tack is Straight across the trailer, therefore each Outside Living Quarter Wall measures the same, and the Size of the Living Quarters is determined by the length of either Outside Wall. The Bulkhead Wall that separates the "Full Mid Tack" from the Stock Compartment is normally on a Slant.
It's also possible to have a Full Mid Tack that is in a Stall like Configuration. In this case there will be a short wall and a long wall configuration in the Living Quarters.
If you have a "Half Mid Tack", this area is considered part of your Living Quarters when it comes to measuring and determining your "Short Wall" Length.
See also in this section of < FAQ > - helpful prints under "How Do I Measure my Trailer?"