01 What makes it unique
Forest River lists the 2026 Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 375FAM at 12,904 lb dry, a net carrying capacity of 2,596 lb and a pin weight of 2,325 lb. It prints no GVWR for it.
It is 42' 9" long and 13' 3" high. Forest River prints its tanks as 57 gal fresh, 86 gal grey, 60 gal black.
Every number on this page was read on 7 Nov 2026 from Forest River’s own 2026 Heritage Glen Fifth Wheels floorplan page for the Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 375FAM, whose heading names the model year 2026.
How the 375FAM differs from the other two Heritage Glen Fifth Wheels. Most distinctive first. How these ranks are worked out.
- Dry weight, 12,904 lb: heaviest of three; next is the 378FL (11,589 lb).
- Pin weight, 2,325 lb: heaviest of three; next is the 378FL (2,140 lb).
- Pin weight as a share of dry weight, 18%: smallest of three; next is the 378FL (18.5%).
- Exterior height, 13 ft 3 in: lowest of three; next is the 325RL (13 ft 4 in).
- Grey tank, 86 gal: largest of three; next are the 325RL and 378FL (62 gal).
- Black tank, 60 gal: largest of three; next are the 325RL and 378FL (30 gal).
- Cargo capacity, 2,596 lb: second-smallest of three, between the 378FL (2,551 lb) and the 325RL (3,491 lb).
- Length, 42 ft 9 in: second-shortest of three, between the 325RL (37 ft 8 in) and the 378FL (43 ft 6 in).
Next to the 378FL, the nearest lighter floorplan by dry weight, the 375FAM is 1,315 lb heavier by dry weight, has 45 lb more cargo capacity, has a pin weight 185 lb heavier, is 9 in shorter, stands 3 in lower, has a grey tank 24 gal larger and has a black tank 30 gal larger; the two publish the same fresh tank.
02 Full specifications
Dimensions
- Exterior length
- 42' 9"
- Exterior height
- 13' 3"
- Exterior width
- 96"
- Interior height
- Not published by Forest River
Weights
- Dry / unit base weight (UVW)
- 12,904 lb
- GVWR (max loaded)
- Not published by Forest River
- Net cargo / payload (CCC)
- 2,596 lb
- Hitch / pin weight
- 2,325 lb
Capacities
- Fresh water
- 57 gal
- Grey water
- 86 gal
- Black water
- 60 gal
Running gear
- Hitch type
- Fifth wheel (pin box)
- Tire size
- Not published by Forest River
Sleeping & layout
- Sleeps
- Not published by Forest River
- Availability (as printed)
- Forest River files this floorplan “DSO” (Dealer Stock Only): sold from dealer inventory, not orderable from the factory
- Sold under each badge (as printed)
- Forest River lists this floorplan with the same hitch weight, UVW, CCC and length on its 2026 Wildwood Heritage Glen Fifth Wheels and Salem Hemisphere Fifth Wheels rosters (saved pages)
- Model year (as printed)
- page title "2026 Wildwood Heritage Glen Fifth Wheels 375FAM - DSO Floorplan - Forest River RV"
- Weight basis (as printed)
- UVW footnote: "*Estimated Average based on standard build optional equipment."
- Maker status (as printed)
- title suffix "- DSO"
- Awning
- 13' & 9'6"
How these published figures sit against the rest of the catalogue: fifth wheel pin weight and payload; fresh, grey and black tank sizes; camper trailer size chart.
Drawn to scale
Size, with end view
Holding tanks
Axles, wheels and nose shape are schematic; not a floorplan. Data: dataset.
03 The Heritage Glen Fifth Wheels floorplan family
The Heritage Glen Fifth Wheels floorplans below were added from Forest River’s 2026 Heritage Glen Fifth Wheels floorplan page; every Heritage Glen Fifth Wheels floorplan on this site, every model year, is listed on the Heritage Glen Fifth Wheels hub.
| Floorplan | Nominal | Sleeps | Notable |
|---|---|---|---|
| Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 325RL | 37' 8" | — | Profiled |
| Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 378FL | 43' 6" | — | Profiled |
| Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 375FAM | 42' 9" | — | Profiled |
The Heritage Glen Fifth Wheels floorplans below were added from Forest River’s 2026 Heritage Glen Fifth Wheels floorplan page; every Heritage Glen Fifth Wheels floorplan on this site, every model year, is listed on the Heritage Glen Fifth Wheels hub.
04 Notes on this floorplan
What Forest River does not publish for the Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 375FAM
Forest River prints no GVWR, tire size, interior height, sleeping capacity for this model, so none is given. Nothing is filled from a sibling model, a different model year or a dealer listing.
Read the label on the trailer
Federal rules put a load-carrying label inside every RV trailer: its unloaded weight with full propane, its cargo carrying capacity and its GVWR (49 CFR 571.110 and 571.120). Those figures come from the trailer itself and govern the towing decision.
05 How it compares
11,589 lb dry and Not published by Forest River GVWR, against this model’s 12,904 lb and Not published by Forest River.
06 Loading it for a trip
A full 57-gallon fresh tank is about 473 lb of water, 18% of the Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 375FAM’s 2,596 lb cargo capacity, leaving 2,123 lb. Across 3 Heritage Glen Fifth Wheels floorplans the water share runs 14% to 19%, and 1 gives up more than this one. Nearest on that share: Heritage Glen Fifth Wheels Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 325RL at 14% and Heritage Glen Fifth Wheels Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 378FL at 19%.
07 Where this floorplan sits
Closest sibling: the Heritage Glen Fifth Wheels Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 378FL, nearest on the published figures. It differs on 6 of the 7 fields both publish (this plan first): length 42 ft 9 in vs 43 ft 6 in; dry weight 12,904 lb vs 11,589 lb; cargo capacity 2,596 lb vs 2,551 lb; hitch weight 2,325 lb vs 2,140 lb; grey tank 86 gal vs 62 gal; black tank 60 gal vs 30 gal. They match on fresh tank.
| Heritage Glen Fifth Wheels plans | This plan | Position, low to high | Range |
|---|---|---|---|
| Dry weight (lb) | 12,904 | 3 of 3 | 10,594–12,904 |
| Cargo capacity (lb) | 2,596 | 2 of 3 | 2,551–3,491 |
| Hitch weight (lb) | 2,325 | 3 of 3 | 2,085–2,325 |
| Length | 42 ft 9 in | 2 of 3 | 37 ft 8 in–43 ft 6 in |
| Grey tank (gal) | 86 | 3 of 3 | 62–86 |
| Black tank (gal) | 60 | 3 of 3 | 30–60 |
Either side of it by dry weight: Heritage Glen Fifth Wheels Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 378FL is 1,315 lb lighter (11,589 lb dry).
| Nearest Heritage Glen Fifth Wheels siblings | Length | Sleeps | Dry (lb) | GVWR (lb) | CCC (lb) | Hitch (lb) | Fresh (gal) |
|---|---|---|---|---|---|---|---|
| Heritage Glen Fifth Wheels Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 375FAM | 42 ft 9 in | — | 12,904 | — | 2,596 | 2,325 | 57 |
| Heritage Glen Fifth Wheels Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 378FL | 43 ft 6 in | — | 11,589 | — | 2,551 | 2,140 | 57 |
| Heritage Glen Fifth Wheels Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 325RL | 37 ft 8 in | — | 10,594 | — | 3,491 | 2,085 | 57 |
All 3 Heritage Glen Fifth Wheels floorplans: Heritage Glen Fifth Wheels line hub.
| Other lines, nearest by dry weight | GVWR (lb) | Dry (lb) | Sleeps | Length |
|---|---|---|---|---|
| Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 375FAM | — | 12,904 | — | 42 ft 9 in |
| ElkRidge 37FBH | 16,660 | 12,905 | 4 | 42 ft 4 in |
| Reflection 367BHS | — | 12,900 | — | — |
| Avenue 38DBL | 15,995 | 12,890 | — | 41 ft 11 in |
| Sandpiper 4002FB | 15,500 | 12,889 | 6 | 43 ft 5 in |
| Sierra 4002FB | 15,500 | 12,889 | — | 43 ft 5 in |
| StoneRidge 39BH | 15,500 | 12,920 | — | 40 ft 10 in |
Against the Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 375FAM: the ElkRidge 37FBH is 1 lb heavier; the Reflection 367BHS is 4 lb lighter; the Avenue 38DBL is 14 lb lighter.
08 Common questions about the Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 375FAM
How much can the Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 375FAM carry?
2,596 lb. A full fresh tank uses 473 lb of it.
What is the pin weight of the Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 375FAM?
2,325 lb as published, 18% of the dry weight (median across 686 fifth wheels here: 19%).
What are the tank capacities on the Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 375FAM?
Fresh 57, grey 86, black 60 gallons. Off hookups, fresh water runs out first.
How long is the Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 375FAM?
42' 9" overall, tongue or pin box included.
From the figures above.
09 What this page publishes, and what it does not
10 of the 18 fields this catalogue tracks are published for the Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels 375FAM. Not published: GVWR, interior height, sleeps, slide count, axle count, tire specification, refrigerator, air conditioning.
Sourcing rules: methodology.
10 Manuals & documents
Sources: forestriverinc.com (linked below); the full source note is at the foot of the page.