Description
2021 Keystone Montana 3931FB Specifications
Looking for a spacious and luxury fifth wheel for extended travels? The 2021 Keystone Montana 3931FB offers high-end amenities, large capacity tanks, and plenty of living space, perfect for couples or small families who love adventure.
General Information
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Year: 2021
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Manufacturer: Keystone
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Model Name: Montana
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Trim: 3931FB
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VIN: 4YDF39326M4701348
Dimensions and Weight
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Length: 41′ 4” – Extra-long design for maximum living space
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Exterior Width: 8′ 5” – Wide interior for comfort
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Exterior Height: 13′ 5” – Tall enough for spacious ceilings
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Dry Weight (UVW): 13,542 lb – Heavy-duty construction for stability
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Gross Vehicle Weight Rating (GVWR): 16,500 lb – Ensures safe towing and payload
Exterior Features
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Number of Slides: 3 – Expands living and bedroom areas for comfort
Interior Features
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Total Sleeping Capacity: 4 – Ideal for couples or small families
Propane and Fuel
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Total Propane Capacity: 60 lbs – Supports heating, cooking, and appliances
Tank Capacities
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Fresh Water Capacity: 66 gallons – Plenty for long trips
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Grey Water Capacity: 88 gallons – Efficient wastewater management
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Black Water Capacity: 88 gallons – Convenient and sanitary
Why Choose the 2021 Keystone Montana 3931FB?
The Keystone Montana 3931FB is perfect for travelers seeking a luxury fifth wheel with high capacity, modern amenities, and a robust design. With three slide-outs and generous water and propane tanks, it’s built for comfort and extended adventures on the road.


















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