Farmhouse sink, loft
Get in touch and we'll be happy to answer any questions or set up an appointment to see it in person.
2026 Forest River Sandpiper 3990FL
NewStock #2556
Listing price
2026 Sandpiper 3990FL
Other floor plans with a similar body style, feature mix, and price range, prioritizing other manufacturers and brands.
Length
43 ft 6 in
Dry weight
12,439 lbs
Sleeps
8
Slideouts
5
The 3990FL is built around a front living room that actually feels like one. Panoramic windows, a fireplace, and a 50" smart TV anchor the space, while the kitchen earns its keep with a farmhouse sink, solid surface countertops, a gas cooktop, and a proper island. A full loft with dedicated stairs adds real sleeping space without the awkwardness of a ladder, and the rear King bed comes with a walk-in shower and enough slide-out real estate to make the bedroom feel residential. Practical touches like an automatic leveling system, 200W roof solar, washer/dryer prep, and dual ducted air conditioners show this rig is set up for extended stays. Not just weekends.
Many factors play into a unit's listing price and what you should pay. This guide provides a ballpark estimate, but it does not factor in your exact scenario or how different listings are equipped.
There may be room for price negotiation.
Unlock pricing insights with RV Envy Pro →$63,995 – $78,999
This unit has been on the lot for 91 to 120 days.
When was this unit listed?This unit ranks near the lowest priced for new units in this model year.
From the dealer's listing
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!
Lee's Country RV
Batesville, IN
Sells faster than 100% of Indiana RV dealers
Compared with 20 dealers in Indiana
Other listings for this floor plan, ranked by condition, model year, distance, price, and listing quality.
