# Forest River Sierra Destination 399LOFT

399LOFT is a destination floor plan by Sierra Destination (Forest River).

## Specs (2025 model year)

| Spec | Value |
| --- | --- |
| Length | 40 ft 8 in |
| Sleeps | 10 |
| Slide-outs | 3 |
| Dry weight | 10,939 lbs |
| GVWR | 13,619 lbs |

## Model years

2025, 2024, 2023, 2022, 2021. Year-specific specs: `https://rvenvy.com/destination-trailers/forest-river/sierra-destination/399loft?year={year}`

## Floor plan tags

loft, rear bedroom, front living

## Inventory

5 units currently for sale priced $44,921 to $64,999: https://rvenvy.com/destination-trailers/forest-river/sierra-destination/399loft/inventory

Floor plan diagram: https://images.rvenvy.com/fa14be182dde493c665ff7e8864fb5a4b8c7e50c2fc7a7c18a98e8af4f78dcbf/1024.webp

Canonical page: https://rvenvy.com/destination-trailers/forest-river/sierra-destination/399loft