# Keystone Carbon 398

Carbon 398 is a toy hauler floor plan by Keystone.

## Specs (2026 model year)

| Spec | Value |
| --- | --- |
| Length | 43 ft 11 in |
| Sleeps | 10 |
| Slide-outs | 3 |
| MSRP | $114,555 |

## Model years

2026, 2025, 2024, 2023, 2022, 2021. Year-specific specs: `https://rvenvy.com/toy-haulers/keystone/carbon/398?year={year}`

## Overview

A 17-foot garage, two full baths, and a front bedroom give the Keystone Carbon 398 an unusually versatile layout for extended trips with toys in tow. The garage can become a second living space with the optional patio package, three seasons patio door, and HappiJac bed with flip-down sofas. Up front, the King bed, solid-surface kitchen, 16.5-cubic-foot 12V refrigerator, and Thomas Payne furniture create a comfortable residential-style living area.

## Floor plan tags

two full baths, front bedroom

## Inventory

No units currently for sale. Search similar inventory: https://rvenvy.com/inventory

Floor plan diagram: https://images.rvenvy.com/ea06ae9858933f0a71d1c4c6456751c410002ffa736a6600b17566ff8ebdec4d/1024.webp

Canonical page: https://rvenvy.com/toy-haulers/keystone/carbon/398