The 2022 Keystone RV Alpine 3700FL is a luxury fifth wheel designed for extended stays and full-time RV living. With a front living layout, bath and a half, kitchen island, and king bedroom suite, this model delivers residential comfort, premium construction, and four-season capability.
2022 Keystone Alpine 3700FL Specifications
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First, this fifth wheel sleeps 6, making it suitable for families or guests.
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Additionally, 5 slides expand the living space for added comfort.
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Overall, the 41 ft 6 in length provides a spacious residential layout.
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Meanwhile, the 8 ft 4 in exterior width allows for generous interior room.
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Finally, the 13 ft 4 in exterior height supports tall ceilings and large windows.
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To begin with, the 2,775 lb hitch weight ensures a stable towing connection.
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In comparison, the 13,944 lb dry weight reflects the unit’s solid construction.
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Furthermore, a 2,556 lb cargo capacity allows you to pack essential gear.
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Equally important, the 7,000 lb axle weight enhances road stability.
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Lastly, the dual-axle configuration improves overall towing performance.
Capacities
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For extended trips, the 54-gallon fresh water capacity supports daily use.
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At the same time, the 78-gallon grey water tank reduces dump frequency.
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Likewise, the 78-gallon black water capacity adds convenience when camping.
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In addition, two 30 lb LP tanks provide ample propane for appliances.
Utilities & Systems
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To power everything efficiently, the unit includes 50-amp electrical service.
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For colder conditions, a 40,000 BTU furnace delivers consistent heat.
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Meanwhile, 30,000 BTU of air conditioning keeps the interior comfortable in warm weather.
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For convenience, an on-demand water heater provides hot water when needed.
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Finally, washer/dryer capability adds flexibility for long-term stays.
Tires
Sleeping & Interior Features
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At the rear, the king bed offers a comfortable and spacious sleeping area.
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Up front, a front living area creates a dedicated space for relaxation.
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Additionally, opposing tri-fold sofa sleeper slides provide extra sleeping options.
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For premium comfort, Thomas Payne theater seating includes heat, massage, LED lighting, and USB charging.
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To enhance the atmosphere, high ceilings and panoramic frameless windows bring in natural light.
Kitchen & Dining
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At the center, a kitchen island adds prep space and storage.
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For cooking, a three-burner cooktop supports everyday meals.
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Above, a convection microwave/oven expands cooking versatility.
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Meanwhile, an 18 cu. ft. gas/electric refrigerator offers residential-style storage.
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For dining, a free-standing table with chairs provides flexibility.
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Additionally, solid-surface countertops enhance durability and appearance.
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Finally, a stainless steel dual-bowl sink simplifies cleanup.
Bathroom Configuration
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Designed for convenience, this floorplan features a bath and a half layout.
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At the rear, the full master bathroom creates a private retreat.
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In addition, a half bath near the kitchen offers easy access for guests.
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Bath and a Half Floorplan
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Full Rear Master Bathroom
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Dual Sink Vanity
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Shower with Seat
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Porcelain Foot-Flush Toilet
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Washer/Dryer Prep
Living & Entertainment
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First, enjoy a 50″ LED TV in the living room, ideal for movie nights or entertaining guests.
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Additionally, a TV in the bedroom provides private viewing comfort.
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Meanwhile, the 40″ fireplace with 5,000 BTU of electric heat adds warmth and ambiance during cooler evenings.
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For added convenience, a central vacuum system makes cleaning quick and effortless.
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Finally, day/night roller shades allow you to easily control privacy and natural light throughout the coach.
Exterior Highlights
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To begin with, heated basement storage keeps your gear protected in colder conditions.
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Furthermore, Hitch Vision™ with LED lighting improves visibility during hitching and nighttime setup.
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In addition, the Road Armor™ shock absorbing hitch pin helps reduce towing stress and vibration.
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For outdoor comfort, Carefree power awnings (14′ & 14′) provide generous shade at the push of a button.
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Equally important, the one-touch 6-point hydraulic leveling system ensures fast and stable campsite setup.
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Moreover, heavy-duty G-rated tires deliver durability and confidence on the road.
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Looking ahead, solar prep allows for easy future upgrades.
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For added safety, back-up and side camera prep enhances maneuverability.
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Lastly, an outside shower with hot and cold water adds convenience after outdoor activities.
Construction & Build Quality
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At the foundation, the 100″ wide-body construction creates a spacious residential feel.
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Supporting this, a 12″ I-beam frame provides strength and long-term durability.
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In addition, laminated sidewalls with double-welded aluminum improve insulation and structural integrity.
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Above, the walkable roof with Alpha Super Flex TPO membrane offers durability and long-term protection.
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Furthermore, Tru-Fit™ slide construction reduces wear while enhancing leak resistance.
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To improve comfort, in-floor heating ducts distribute heat efficiently without sacrificing storage space.
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Finally, color-coded unified wiring simplifies maintenance and troubleshooting.
Climate & Weather Protection
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Designed for year-round use, Polar Pack four-season protection supports camping in a wide range of climates.
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Additionally, a heated and enclosed underbelly helps protect vital components in cold weather.
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For extra protection, 12V heat pads on tanks help prevent freezing.
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During warmer months, dual Quiet Cool A/C units maintain a comfortable interior temperature.
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To complete the system, a fully programmable dual-zone thermostat allows precise climate control throughout the RV.
Safety Features
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For peace of mind, a carbon monoxide detector continuously monitors air quality.
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Likewise, a smoke detector provides early warning in case of fire.
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In addition, a propane gas leak detector enhances onboard safety.
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Moreover, GFI receptacles protect electrical systems in wet areas.
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For emergencies, a fire extinguisher is easily accessible.
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Finally, a breakaway switch adds an essential layer of towing safety.
Keystone Alpine 3700FL Luxury Highlights
Luxury comes standard, not optional, in the Keystone Alpine 3700FL fifth wheel. With nearly 7-foot-tall slides, high ceilings, and a spacious front living room, this RV delivers a true residential feel. The rear master suite includes a king bed with underbed storage, a private bath with dual sinks, and washer/dryer prep—perfect for long-term stays or full-time RV living.
Why Choose the 2022 Keystone RV Alpine 3700FL?
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Ideal for full-time RV living
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Spacious front living floorplan
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Bath and a half convenience
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Premium four-season capability
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Trusted Keystone RV build quality
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- For complete factory details, view the Keystone Alpine 3700FL fifth wheel specifications directly from Keystone RV.
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