2026 Keystone Alpine 3712KB
Fifth Wheel · Luxury Fifth Wheel · 41.42 ft · sleeps 6

The 2026 Keystone Alpine 3712KB is a fifth wheel (luxury fifth wheel). At sleeps 6, 41.42 ft long, 14,740 lbs dry, it's positioned for buyers comfortable towing with the right tow vehicle.
Floor plan

Photos of the 2026 Keystone Alpine 3712KB
Walkthrough video
Video courtesy of RV Connection Inc on YouTube.
Full specifications
Dimensions
| Length | 41.42 ft |
|---|
Weights
| Dry Weight | 14,740 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 3712KB sleep?
The 2026 Keystone Alpine 3712KB sleeps 6.
How long is the 2026 Keystone Alpine 3712KB?
The 2026 Keystone Alpine 3712KB is 41.42 feet long.
What's the dry weight of the 2026 Keystone Alpine 3712KB?
The 2026 Keystone Alpine 3712KB has a dry weight of 14,740 lbs.
Where can I buy the 2026 Keystone Alpine 3712KB?
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 3712KB 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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