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Condition: Used
Exterior Length: 40 ft 9 in
Sleeps: 4
Number of Slide Outs: 3
Number of Axles: Tandem
Fresh Water Tank Capacity: 66 gal
Description: The 2021 Keystone Montana Series M 3813MS offers an exceptional living experience with a spacious layout that sleeps four comfortably. With a dry w...
Updated: Wednesday, October 21, 2026 06:05 AM
Seller: Southland RV LaGrange
Condition: Used
Exterior Length: 41 ft 9 in
Sleeps: 4
Number of Slide Outs: 3
Number of Axles: Tandem
Exterior Height: 13 ft 4 in
Description: Used 2021 Keystone RV Montana 3813MS
Details: ***COMING SOON*** Call for pricing: Keystone Montana fifth wheel 3813MS highlights: Hide-A-B...
Updated: Monday, October 12, 2026 09:53 AM
Seller: Southland RV LaGrange
