2026 Forest River Sandpiper 3990FL
New Fifth Wheel in Haslett, Michigan, 48823
Unit Specs
- Stock #15247
- Year2026
- ManufacturerForest River
- Make Forest River
- ModelSandpiper
- Floorplan3990FL
- Floorplan LayoutFront Entertainment
Front Living Area
Kitchen Island
Loft
Rear Bedroom - Type Fifth Wheel
- ConditionNew
- Length43' 0"
- VIN4X4FSAS22TJ049122
- Price $106,491.00
- Need to know your payment? Use our RV Loan Calculator!
- Exterior ColorWhite
- Sleeps8
- Water Capacity (Fresh)50 gal
- Water Capacity (Black)50 gal
- Water Capacity (Grey)80 gal
- Slideouts5
- Tow/Hitch Weight2825 lbs
Forest River Sandpiper fifth wheel 3990FL highlights:
- Outside Storage
- Theater Seating
- Kitchen Island
- Upper Loft
The perfect fifth wheel for a larger family! This unit sleeps eight people the loft above the rear master bedroom and bathroom. In the loft area, there are two 44" x 74" bunk mats for comfort as well as wardrobe/storage at the head of each. The master bedroom features a king size bed that slides out to create more space by the bed. A spacious bath features a one-piece fiberglass shower for comfort. A spacious kitchen features two slides, a free-standing dinette in one, and the 12V refrigerator and stove in the other. There is also a center island with large sink for added food prep space. Head up the steps in front to a dual slide front living area with 50" TV and fireplace beneath the window. There is also theater seating opposite the TV, and a tri-fold hide-a-bed in each slide allowing added sleeping space when needed.
You will find the perfect balance of size, space, features, and luxury with any one of these Forest River Sandpiper fifth wheels! They have a cambered powder coated frame with rust prohibitor, and a fully enclosed underbelly for added protection against the elements. Also, the power front jacks with spring-loaded pins enhance the convenience, speed, and safety. The large, tinted windows come with a 80/20 UV prohibitors. Some hassle-free amenities include a 60k BTU on-demand water heater, porcelain foot flush toilet(s), tire pressure monitor system, and an electric leveling system! Inside, you'll enjoy stainless steel kitchen package, solid surface kitchen countertops, Beachside Sundance Congoleum linoleum, recessed residential lighting, and many more comforts!
- Front Entertainment
- Front Living
- Kitchen Island
- Loft
- Rear Bedroom
2026 Forest River Sandpiper 3990FL Features
-
Exterior
Slideout
2026 Forest River Sandpiper 3990FL Specifications
Height
13' 4"
Length
43' 6"
Width
8' 0"
Dry Weight
12,439 lbs
GVWR
15,375 lbs
Hitch Weight
2,825 lbs
Payload Capacity
2,936 lbs
Refrigerator Capacity
16 cu ft
Sleep Capacity
8
Water Capacity - Black
50 gal
Water Capacity - Fresh
50 gal
Water Capacity - Grey
80 gal
# Awnings
1
# Axles
2
# Doors
1
# Slides
5
Hitch
Fifth Wheel
# A/C
2
A/C Spec
15k BTU Air Conditioners, prepped for 3rd 15k BTU A/C
2026 Forest River Sandpiper 3990FL Literature
Gillette's Interstate RV
7210 East Saginaw Street
Haslett, MI 48823
Member Since 2009
See 357 ReviewsUnit Specs
- Stock #15247
- Year2026
- ManufacturerForest River
- Make Forest River
- ModelSandpiper
- Floorplan3990FL
- Floorplan LayoutFront Entertainment
Front Living Area
Kitchen Island
Loft
Rear Bedroom - Type Fifth Wheel
- ConditionNew
- Length43' 0"
- VIN4X4FSAS22TJ049122
- Price $106,491.00
- Need to know your payment? Use our RV Loan Calculator!
- Exterior ColorWhite
- Sleeps8
- Water Capacity (Fresh)50 gal
- Water Capacity (Black)50 gal
- Water Capacity (Grey)80 gal
- Slideouts5
- Tow/Hitch Weight2825 lbs
Email Seller
Request More Info on this 2026 Forest River Sandpiper 3990FL Offered for sale by Gillette's Interstate RV
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