2026 Forest River Sierra 3900HBLR

New Fifth Wheel in Downey, California, 90241

Unit Specs


The campground will feel like home in this 2026 Forest River Sierra 3900HBLR. Ready to be a proud Forest River owner? This 2026 Forest River Sierra 3900HBLR is the perfect fit.

2026 Forest River Sierra 3900HBLR Features


2026 Forest River Sierra 3900HBLR Specifications

Dimensions

Height

13' 4"

Length

42' 9"

Width

8' 0"

Weights

Dry Weight

13,284 lbs

GVWR

16,085 lbs

Hitch Weight

2,085 lbs

Payload Capacity

2,801 lbs

Capacities

Refrigerator Capacity

16 cu ft

Sleep Capacity

3

Water Capacity - Black

104 gal

Water Capacity - Fresh

50 gal

Water Capacity - Grey

136 gal

Exterior

# Awnings

2

# Axles

2

# Doors

1

# Slides

3

Hitch

Fifth Wheel

Electrical

# A/C

2

A/C Spec

Dual ducted 15k BTU Air Conditioners, prepped for 3rd 15k BTU A/C

*MFG Specs are for base unit. Certain options may change specifications listed. Please consult dealer for more details. Data is provided by a 3rd party. RVUSA.com cannot guarantee the accuracy of the data presented.

2026 Forest River Sierra 3900HBLR Literature


Seller Info

Giant RV

11111 Florence Avenue
Downey, CA 90241

Member Since 2025

See 460 Reviews

Unit Specs

Email Seller

Request More Info on this 2026 Forest River Sierra 3900HBLR Offered for sale by Giant RV
Giant RV
Giant RV

11111 Florence Avenue
Downey, CA 90241

Phone: Click to Call

campground and travel trailer

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