# Keystone Arcadia 3550MB

3550MB is a fifth wheel floor plan by Arcadia (Keystone).

## Specs (2024 model year)

| Spec | Value |
| --- | --- |
| Length | 39 ft 4 in |
| Sleeps | 5 |
| Slide-outs | 4 |
| Dry weight | 12,438 lbs |
| GVWR | 14,100 lbs |
| MSRP | $96,382 |

## Model years

2024, 2023. Year-specific specs: `https://rvenvy.com/fifth-wheel-trailers/keystone/arcadia/3550mb?year={year}`

## Overview

At just under 40 feet, the Arcadia 3550MB opens up campgrounds that longer fifth wheels can't access — a real-world advantage that owners consistently call out. The mid-bunk layout is more versatile than a standard rear bunk, with a loft configuration and a dedicated office desk tucked into the bunkhouse area. Out back, you've got a full outdoor kitchen for cooking without heating up the interior, and inside, the full-size shower with bench and residential 12V fridge elevate the day-to-day comfort level noticeably. Keystone's Next Generation Crawlspace Chassis wraps the plumbing in 360° insulation — smart engineering for anyone camping in shoulder-season temperatures.

## Floor plan tags

mid bunk

## Inventory

3 units currently for sale priced $41,299 to $48,995: https://rvenvy.com/fifth-wheel-trailers/keystone/arcadia/3550mb/inventory

Floor plan diagram: https://images.rvenvy.com/cf354a77ec75f9c6f2da7f67b5793110d066bccef63214e8b676fe34143c28b3/1024.webp

Canonical page: https://rvenvy.com/fifth-wheel-trailers/keystone/arcadia/3550mb