# Forest River Sandpiper 4003MB

> Loft, bunkhouse, mid bunk, desk, farmhouse sink

4003MB is a fifth wheel floor plan by Sandpiper (Forest River).

## Specs (2026 model year)

| Spec | Value |
| --- | --- |
| Length | 42 ft 9 in |
| Sleeps | 8 |
| Slide-outs | 4 |
| Dry weight | 12,609 lbs |
| GVWR | 15,500 lbs |

## Model years

2026, 2025, 2024. Year-specific specs: `https://rvenvy.com/fifth-wheel-trailers/forest-river/sandpiper/4003mb?year={year}`

## Floor plan tags

loft, desk, mid bunk, front bedroom, rear living area

## Inventory

22 units currently for sale priced $49,995 to $78,995: https://rvenvy.com/fifth-wheel-trailers/forest-river/sandpiper/4003mb/inventory

Floor plan diagram: https://images.rvenvy.com/985db6b986c9b015d8032cdc88262d544d063e283eea0f6a3ab925113b5ba878/1024.webp

Canonical page: https://rvenvy.com/fifth-wheel-trailers/forest-river/sandpiper/4003mb