2026 Coachmen Phoenix 389DEK vs Forest River Sandpiper 3900HBLR
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Key differences
Both are 2026 Fifth wheel models. Here's how they differ, from manufacturer specifications.
- The Forest River Sandpiper 3900HBLR is 5″ longer: 42′ 9″ vs 42′ 4″.
- The Coachmen Phoenix 389DEK is 563 lb lighter unloaded: 12,721 vs 13,284 lb.
- The Forest River Sandpiper 3900HBLR has a 1,585 lb higher GVWR: 16,085 vs 14,500 lb.
- The Forest River Sandpiper 3900HBLR lists 1,022 lb more cargo capacity: 2,801 vs 1,779 lb.
- The Forest River Sandpiper 3900HBLR has a 235 lb lighter hitch weight: 2,085 vs 2,320 lb.
- Both have 3 slide-outs.
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YOUR SHORTLIST
Floorplan
PRICING
Manufacturer price (USD)
Not verified
Not verified
Lowest tracked dealer price (USD)
No recently verified dealer price
No recently verified dealer price
Est. monthly payment (USD)
No verified price to estimate from
No verified price to estimate from
DIMENSIONS & WEIGHTS
Exterior length
42′ 4″
42′ 9″
Exterior width
8′ 0″
8′ 0″
Exterior height
13′ 0″
13′ 4″
Shipping / unloaded weight
12,721 lb
13,284 lb
GVWR
14,500 lb
16,085 lb
Listed cargo capacity
1,779 lb
2,801 lb
Listed hitch weight
2,320 lb
2,085 lb
LIVING & SLEEPING
Sleeping capacity
—
—
Slide-outs
3
3
Main bed
Not verified
Not verified
Bunk beds
Not verified
Not verified
Dinette
Not verified
Not verified
Bathroom
Not verified
Not verified
Refrigerator
Not verified
Not verified
TANKS & EVERYDAY FEATURES
Fresh water
48 gal
50 gal
Gray water
135 gal
136 gal
Black water
45 gal
104 gal
Awning length
18′ 0″
12′ 0″ & 18′ 0″
Shore power / electrical service
Not verified
Not verified
Solar equipment
Not verified
Not verified
Outdoor kitchen
Not verified
Not verified
Washer/dryer prep
Not verified
Not verified
Microwave
Not verified
Not verified
Cooktop
Not verified
Not verified
Air conditioning
Not verified
Not verified
Electric fireplace
Not verified
Not verified
Backup camera
Not verified
Not verified
Propane tanks
—
—
Tire size
Not verified
Not verified
SOURCES & VERIFICATION
Weight basis
Manufacturer unloaded vehicle weight
Manufacturer unloaded vehicle weight
Source checked
2026-10-28 Manufacturer ↗
2026-10-28 Manufacturer ↗
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Manufacturer floorplan images © their respective manufacturers. Specs checked October 19, 2026; exact-unit labels and production options may differ. “Not verified” or a dash means we have no confirmed value. “Not listed” means the applicable manufacturer equipment was checked but does not mention the feature; it does not mean “No.” “Conflicting data” means manufacturer entries disagree. “Optional” equipment is available but is not confirmed as standard. Camera prep does not confirm an installed camera. Weights are kept separate: unloaded weight, GVWR, cargo capacity, and hitch weight. Confirm every specification for the exact model year and configuration with the manufacturer. This tool does not establish towing compatibility.
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