The two letter suffixes (RL, FL, BR, RK, etc.) have always had a meaning relative to the floor plan layout. AFAIK, the four (and now three) numeric digits have never meant anything other than model number. The early 2950, 2955, and 2980 all had the same square footage layout. Montana dropped the 29nn numbers and went exclusively to 3nnn numbers. They range from 32' to 42' in length and two to five slides. Obviously square footage varies widely amongst them.
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Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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