Used 2020 Heartland Milestone 370FLMB Fifth Wheel
A middle bunkhouse, a loft, a separate living area from the kitchen, and a master bedroom with plenty of storage
Heartland Milestone fifth wheel 370FLMB highlights:
- Middle Bunkhouse
- Loft
- Separate Living Area
- Kitchen Island
- Free-Standing Dinette
- Theater Seats
Used 2020 Heartland Milestone 370FLMB — Large-Scale Comfort Meets Family & Group Flexibility
The 2020 Milestone 370FLMB is a full-size fifth wheel built to deliver space, comfort, and flexibility for families or groups who want more than a basic camper. As a used model, it provides a strong value: plenty of room, smart layout, and living features — without the full-new price tag. If you want to travel with family or friends, bring guests, or even accommodate extended stays, this model offers a full-featured home-on-wheels setup.
What the 370FLMB Offers
Flexible Layout with Multiple Living Zones
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A front living area with opposing sofas and theater-style seating gives a real “living-room” feel for relaxing, socializing, or watching TV.
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A separate kitchen and dining area with dual slides — ideal for cooking meals, dining comfortably, or organizing gear without feeling cramped.
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A private master bedroom with a king bed for restful sleep — great for couples or whoever needs privacy at night.
Extra Sleeping & Guest Spaces
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Mid-section bunkhouse plus a loft provide extra sleeping or storage space, making it suitable for kids, guests, or extra passengers.
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The living area sofas offer additional sleeping flexibility when needed — useful for guests or larger groups traveling together.
Comfort and Convenience Features
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Solid-surface kitchen countertops, hardwood-style cabinetry and drawers, a residential-style refrigerator, and practical living amenities deliver a “home away from home” experience.
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Built-in features like tinted safety-glass windows, exterior graphics, and thoughtful floorplan design offer durability, good ventilation/light, and a comfortable travel lifestyle.
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Layout and build work well for seasonal trips, long weekend getaways, or extended vacations — the 370FLMB blends practicality with roomy design so you don’t feel cramped even on longer stays.
Strong Value as a Used Fifth Wheel
Because this is a used 2020 unit, you’re likely getting a lot of the comfort, layout, and versatility of a large fifth wheel — but at a more accessible price compared with new units. For many buyers, that makes it a smart balance of size, amenities, and cost.
Who the 2020 Milestone 370FLMB Is Great For
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Families or groups needing multiple sleeping areas and flexible living/sleeping setups.
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Travelers who want the comforts of home — kitchen, living space, private bedroom, good storage — without stepping up to a motorhome.
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Vacations, seasonal stays, long road trips, or repeated camping with friends/guests.
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Buyers looking for value: a well-equipped fifth wheel with a proven layout and comfort, but at used-price value rather than new-unit cost.
Why Buying a 2020 Milestone 370FLMB from a Capital RV in Minot Makes Sense
Trusted Dealer Support & Realistic Guidance
A reputable dealer who knows this model and the local travel conditions can help you get the right unit, understand what to expect long-term, and match the RV to your real needs.
Post-Sale Support & Maintenance Options
Used doesn’t have to mean “you’re on your own.” A good dealer will offer maintenance support, advice, and resources — helping the RV stay reliable for many seasons ahead.
Balanced Price vs. Features — Strong Value
Because this is a used unit, you often get a lot of the benefits — space, amenities, flexibility — at a price that avoids the steep depreciation of a new RV. It’s a practical way to enjoy fifth-wheel living without overspending.
Flexibility for Many Lifestyles
Whether you’re planning family trips, seasonal travel, guest stays, or occasional getaways, this RV fits a broad range of uses. A good dealer will help ensure you get the configuration that matches how you travel.
Less Pressure, More Reality in Buying
A dealer you trust will focus on what works for you — not upsells or extras. The buying process stays straightforward and transparent.
What a great experience. Absolutely streamlined process of my trade in. I was in and out in just around an hour or so. The staff was super helpful. Cory gave me a walkthrough of my new unit, very knowledgeable staff. I highly recommend this group! - Alex
Stock# 780000122
| Sleeps | 10 |
| Slides | 5 |
| Length | 43 ft 1 in |
| Ext Width | 8 ft |
| Ext Height | 13 ft 3 in |
| Hitch Weight | 2675 lbs |
| GVWR | 15500 lbs |
| Dry Weight | 12520 lbs |
| Cargo Capacity | 2932 lbs |
| Fresh Water Capacity | 50 gals |
| Grey Water Capacity | 80 gals |
| Black Water Capacity | 40 gals |
| Tire Size | 16" |
| Furnace BTU | 35000 btu |
| Number Of Bunks | 2 |
| Available Beds | King |
| Refrigerator Type | Residential |
| Refrigerator Size | 10.7 cu ft |
| Cooktop Burners | 3 |
| Number of Awnings | 1 |
| Axle Weight | 7000 lbs |
| LP Tank Capacity | 30 lbs |
| Water Heater Capacity | 6 gal |
| AC BTU | 13500 btu |
| Awning Info | 17' |
| Axle Count | 2 |
| Washer/Dryer Available | Yes |
| Number of LP Tanks | 2 |
| Shower Type | Standard |
| Electrical Service | 50 amp |
| VIN | 5SFMG4529LE433285 |
Milestone 370FLMB Reviews
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Manufacturer and/or stock photographs may be used and may not be representative of the particular unit being viewed. Where an image has a stock image indicator, please confirm specific unit details with your dealer representative.


