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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: Thursday, August 27, 2026 01:40 PM
Seller: Young's RV Center
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: Thursday, August 27, 2026 01:40 PM
Seller: Young's RV Center
Stock Number: P47617
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: Used
Number of Axles: Tandem
Description: Used 2025 Forest River RV Sandpiper 3990FL
Details: Forest River Sandpiper fifth wheel 3990FL highlights: Shower with a Seat Outside Storage Thea...
Updated: Thursday, September 10, 2026 10:58 AM
Seller: RV Station-Victoria
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: Tuesday, September 08, 2026 10:50 AM
Seller: Fun Town RV - Fairfield
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: Friday, September 11, 2026 12:46 PM
Seller: RV Station- Cleveland TX
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: Tuesday, July 28, 2026 02:07 PM
Seller: O'Connor RV Centre
