# Forest River Sierra Destination 40DUPLEX

40DUPLEX is a destination floor plan by Sierra Destination (Forest River).

## Specs (2025 model year)

| Spec | Value |
| --- | --- |
| Length | 42 ft 10 in |
| Sleeps | 10 |
| Slide-outs | 4 |
| Dry weight | 12,689 lbs |
| GVWR | 15,515 lbs |

## Model years

2025, 2024. Year-specific specs: `https://rvenvy.com/destination-trailers/forest-river/sierra-destination/40duplex?year={year}`

## Inventory

3 units currently for sale priced at $61,995: https://rvenvy.com/destination-trailers/forest-river/sierra-destination/40duplex/inventory

Floor plan diagram: https://images.rvenvy.com/0140ebc9be3ce196eabcbecd319428c8ac4a425c5f1e5dc96fecd6d05fa24126/1024.webp

Canonical page: https://rvenvy.com/destination-trailers/forest-river/sierra-destination/40duplex