Quote:
Originally Posted by thor293
I don't know about now but it used to be the number referenced inside length of living space.
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That appears to be true today as well. If there is something after the number it generally denotes the floor plan at that length. Some of the models use letters to denote floor plans while others use a dot and number.
Other manufactures also use the same type of system so it wouldn't surprise me if there were some type of industry standard on model numbering (at least the first two characters of the model number).