2026 Keystone Alpine 3700FL
Fifth Wheel · Luxury Fifth Wheel · 41.42 ft · sleeps 6

The 2026 Keystone Alpine 3700FL is a fifth wheel (luxury fifth wheel). At sleeps 6, 41.42 ft long, 14,760 lbs dry, it's positioned for buyers comfortable towing with the right tow vehicle.
Floor plan

Photos of the 2026 Keystone Alpine 3700FL
Walkthrough video
Video courtesy of RV Roadway on YouTube.
Full specifications
Dimensions
| Length | 41.42 ft |
|---|
Weights
| Dry Weight | 14,760 lbs |
|---|
Living
| Sleeps | 6 |
|---|---|
| Bunkhouse | No |
Power & Electrical
| Shore Power | 50 A |
|---|
Amenities
| Outdoor Kitchen | No |
|---|---|
| Theater Seating | Yes |
| Residential Fridge | Yes |
| Fireplace | No |
| Four-Season | Yes |
| Off-Road Capable | No |
| Washer / Dryer | prep |
Similar Fifth Wheels to consider
Other fifth wheels in the catalog with comparable size and price.
Frequently asked questions
How many people does the 2026 Keystone Alpine 3700FL sleep?
The 2026 Keystone Alpine 3700FL sleeps 6.
How long is the 2026 Keystone Alpine 3700FL?
The 2026 Keystone Alpine 3700FL is 41.42 feet long.
What's the dry weight of the 2026 Keystone Alpine 3700FL?
The 2026 Keystone Alpine 3700FL has a dry weight of 14,760 lbs.
Where can I buy the 2026 Keystone Alpine 3700FL?
Pirka Wakka is a brand-agnostic catalog and doesn't sell RVs. The "Buy on Keystone" link on this page sends you to the manufacturer's product page — they'll route you to an authorized dealer.
Not sure if the 2026 Keystone Alpine 3700FL is right for you?
Tell Matchmaker your trip, your budget, and your tow vehicle. She'll narrow the catalog to the 2-4 RVs that actually fit — verified specs only, no upsells.
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