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Stock Number: P5969
Exterior Length: 43 ft 6 in
Sleeps: 9
Number of Slide Outs: 5
Condition: Used
Number of Axles: Tandem
Description: Used 2023 Forest River RV Sandpiper 3990FL
Details: Forest River Sandpiper fifth wheel 3990FL highlights: Walk-In Shower Outside Storage Theater...
Updated: Monday, July 20, 2026 10:37 PM
Location: Cleveland, Texas
Seller: RV Station- Cleveland TX
Stock Number: 7535
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Number of Axles: Tandem
Description: New 2026 Forest River RV Sandpiper 3990FL
Details: Forest River Sandpiper fifth wheel 3990FL highlights: Outside Storage Theater Seating Kitchen ...
Updated: Sunday, July 19, 2026 08:01 AM
Location: Fremont, Ohio
Seller: Young's RV Center
Stock Number: 52500
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Number of Axles: Tandem
Description: New 2026 Forest River RV Sandpiper 3990FL
Details: Forest River Sandpiper fifth wheel 3990FL highlights: Outside Storage Theater Seating Kitchen ...
Updated: Friday, July 17, 2026 10:42 AM
Location: South Burlington, Vermont
Seller: Petes RV Vermont
Stock Number: VL60166
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Number of Axles: Tandem
Description: New 2026 Forest River RV Sandpiper 3990FL
Details: Forest River Sandpiper fifth wheel 3990FL highlights: Outside Storage Theater Seating Kitchen ...
Updated: Friday, July 17, 2026 10:57 AM
Location: Fremont, Ohio
Seller: Young's RV Center
Stock Number: 221114A
Exterior Length: 43 ft 6 in
Sleeps: 9
Number of Slide Outs: 5
Condition: Used
Exterior Color: BEIGE
Description: Used 2024 Forest River RV Sandpiper 3990FL
Details: Forest River Sandpiper fifth wheel 3990FL highlights: Shower with a Seat Outside Storage Thea...
Updated: Thursday, July 16, 2026 12:17 PM
Location: Fairfield, Texas
Seller: Fun Town RV - Fairfield
Stock Number: RV6150
Exterior Length: 43 ft 5 in
Number of Slide Outs: 5
Condition: New
Exterior Color: Gray
Exterior Width: 8 in
Description: Introducing the 2025 Forest River Sandpiper 3990 FL, a fifth-wheel RV designed for adventurers who crave the comforts of home while exploring the g...
Updated: Thursday, June 25, 2026 12:00 AM
Location: Chilliwack, British Columbia, Canada
Seller: O'Connor RV Centre
