# Keystone Alpine 3700FL

> Bath and a half, rear bath, front living, dual vanity

Alpine 3700FL is a fifth wheel floor plan by Keystone.

## Specs (2026 model year)

| Spec | Value |
| --- | --- |
| Length | 41 ft 5 in |
| Sleeps | 6 |
| Slide-outs | 5 |
| MSRP | $122,746 |

## Model years

2026, 2025, 2024, 2023, 2022, 2021, 2020, 2019, 2018. Year-specific specs: `https://rvenvy.com/fifth-wheel-trailers/keystone/alpine/3700fl?year={year}`

## Overview

The Keystone Alpine 3700FL puts the living room up front where the views are, anchored by a 40" electric fireplace and Thomas Payne theater seating with built-in heat, LED lighting, and USB charging. The rear is devoted to a King bed suite with dual vanities, a full bath, and washer/dryer prep, while the half bath up front means nobody has to trek to the back mid-day. A kitchen island, solid surface countertops, residential fridge, and a legless dinette with storage round out a layout that feels genuinely livable rather than just spacious on paper. The 200 cubic feet of heated basement storage, one-touch six-point hydraulic leveling, and enclosed Nautilus water works center show that Keystone leaned hard into convenience features on this one.

## Floor plan tags

bath and a half, dual vanity, front living, rear bath

## Inventory

19 units currently for sale priced $34,900 to $109,995: https://rvenvy.com/fifth-wheel-trailers/keystone/alpine/3700fl/inventory

Floor plan diagram: https://images.rvenvy.com/7858673dc74a2a7f2b20b5b37254ad0531e3ac44da7ed3cb5e519664cdbbf487/1024.webp

Canonical page: https://rvenvy.com/fifth-wheel-trailers/keystone/alpine/3700fl