01 What makes it unique
Forest River lists the 2026 Shasta Phoenix 373MBRB at 13,030 lb dry, a GVWR of 15,000 lb, a net carrying capacity of 1,970 lb and a pin weight of 2,219 lb. Its dry weight plus its carrying capacity comes to exactly its GVWR.
It is 42' 6" long and 13' high. Forest River prints its tanks as 48 gal fresh, 120 gal grey, 75 gal black.
Among the 17 Shasta Phoenix floorplans Forest River lists for 2026 with a published dry weight, it is number 17 from the lightest, in a range from 7,365 lb (Shasta Phoenix 218SE) to 13,030 lb (Shasta Phoenix 373MBRB). Every figure in that comparison is Forest River’s, for the same model year.
Every number on this page was read on 5 Nov 2026 from Forest River’s 2026 Shasta Phoenix sheet, the maker’s own dated document for model year 2026.
How the 373MBRB differs from the other sixteen Shasta Phoenix floorplans. Most distinctive first. How these ranks are worked out.
- Dry weight, 13,030 lb: heaviest of seventeen; next is the 389DEK (12,721 lb).
- Black tank, 75 gal: largest of seventeen; next are the 367BH, 370BAF and 381DBL (72 gal).
- Cargo capacity as a share of GVWR, 13.1%: second-smallest of seventeen, between the 389DEK (12.3%) and the 218SE (13.4%).
- Grey tank, 120 gal: second-largest of seventeen, between the 367BH, 370BAF and 381DBL (112 gal) and the 389DEK (135 gal).
- Cargo capacity, 1,970 lb: fourth-smallest of seventeen, between the 30BHS (1,965 lb) and the 30RLS (2,020 lb).
- Pin weight, 2,219 lb: fourth-heaviest of seventeen, between the 367BH (2,194 lb) and the 391MBH (2,240 lb).
- Pin weight as a share of dry weight, 17%: fifth-smallest of seventeen, between the 381DBL (16.7%) and the 370BAF (17.3%).
- GVWR, 15,000 lb: shared with the 334FL; of seventeen, fourteen lower and one higher, nearest the 370BAF, 381DBL and two others (14,500 lb) and the 367BH (15,500 lb).
- Length, 42 ft 6 in: longest of seventeen, level with the 334FL, 367BH and two others; next is the 389DEK (42 ft 4 in).
- Exterior height, 13 ft: tallest of sixteen, level with the 334FL, 367BH and four others; next are the 298RLS, 336RL and 360BH (12 ft 10 in).
Next to the 389DEK, the nearest lighter floorplan by dry weight, the 373MBRB is 309 lb heavier by dry weight, has a GVWR 500 lb higher, has 191 lb more cargo capacity, has a pin weight 101 lb lighter, is 2 in longer, has a grey tank 15 gal smaller and has a black tank 30 gal larger; the two publish the same exterior height and fresh tank.
02 Full specifications
Dimensions
- Exterior length
- 42' 6"
- Exterior height
- 13'
- Exterior width
- 96"
- Interior height
- Not published by Forest River
Weights
- Dry / unit base weight (UVW)
- 13,030 lb
- GVWR (max loaded)
- 15,000 lb
- Net cargo / payload (CCC)
- 1,970 lb
- Hitch / pin weight
- 2,219 lb
Capacities
- Fresh water
- 48 gal
- Grey water
- 120 gal
- Black water
- 75 gal
Running gear
- Hitch type
- Fifth wheel (pin box)
- Tire size
- Not published by Forest River
Sleeping & layout
- Sleeps
- Not published by Forest River
- Awning
- 17'
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
Weight budget
Size, with end view
Holding tanks
Axles, wheels and nose shape are schematic; not a floorplan. Data: dataset.
Towing it
Check your vehicle. Enter the ratings from your owner’s manual and the door-pillar placard.
Compares your figures with this page’s published GVWR (15,000 lb) and the upper loaded pin estimate (3,750 lb, a rule of thumb). Your vehicle’s placard and the trailer’s own weight label govern.
Loaded range: 15–25% of GVWR on the pin, a rule of thumb, not a measurement of this unit. No truck ratings or hitch classes (why; NHTSA, DOT HS 809 433).
03 The Shasta Phoenix floorplan family
Forest River lists 17 Shasta Phoenix floorplans for 2026; this site profiles every one with a printed weight, from Forest River’s own 2026 Shasta Phoenix sheet.
| Floorplan | Nominal | Sleeps | Notable |
|---|---|---|---|
| Shasta Phoenix 218SE | 29' 1" | — | Profiled |
| Shasta Phoenix 254RLS | 30' 9" | — | Profiled |
| Shasta Phoenix 27BAR | 34' 2" | — | Profiled |
| Shasta Phoenix 31BH | 37' 3" | — | Profiled |
| Shasta Phoenix 30RLS | 34' 2" | — | Profiled |
| Shasta Phoenix 30BHS | 37' | — | Profiled |
| Shasta Phoenix 298RLS | 34' 8" | — | Profiled |
| Shasta Phoenix 368TBH | 42' | — | Profiled |
| Shasta Phoenix 336RL | 37' | — | Profiled |
| Shasta Phoenix 360BH | 39' 9" | — | Profiled |
| Shasta Phoenix 381DBL | 42' 6" | — | Profiled |
| Shasta Phoenix 367BH | 42' 6" | — | Profiled |
| Shasta Phoenix 334FL | 42' 6" | — | Profiled |
| Shasta Phoenix 370BAF | 42' 6" | — | Profiled |
| Shasta Phoenix 391MBH | 42' 2" | — | Profiled |
| Shasta Phoenix 389DEK | 42' 4" | — | Profiled |
| Shasta Phoenix 373MBRB | 42' 6" | — | Profiled |
Forest River lists 17 Shasta Phoenix floorplans for 2026. Every one with a printed weight has a page here.
04 Notes on this floorplan
What Forest River does not publish for the Shasta Phoenix 373MBRB
Forest River prints no 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
12,721 lb dry and 14,500 lb GVWR, against this model’s 13,030 lb and 15,000 lb.
06 Loading it for a trip
A full 48-gallon fresh tank is about 398 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 20% of the Shasta Phoenix 373MBRB’s 1,970 lb cargo capacity, leaving 1,572 lb. Across 17 Shasta Phoenix floorplans the water share runs 13% to 29%, and 2 give up more than this one. Nearest on that share: Shasta Phoenix 391MBH at 19% and Shasta Phoenix 389DEK at 22%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.120 S10.4.3).
07 Where this floorplan sits
Closest sibling: the Shasta Phoenix 370BAF, nearest on the published figures. It differs on 6 of the 8 fields both publish (this plan first): dry weight 13,030 lb vs 12,421 lb; GVWR 15,000 lb vs 14,500 lb; cargo capacity 1,970 lb vs 2,079 lb; hitch weight 2,219 lb vs 2,152 lb; grey tank 120 gal vs 112 gal; black tank 75 gal vs 72 gal. They match on length and fresh tank.
| Shasta Phoenix plans | This plan | Position, low to high | Range |
|---|---|---|---|
| GVWR (lb) | 15,000 | 15–16 of 17 | 8,500–15,500 |
| Dry weight (lb) | 13,030 | 17 of 17 | 7,365–13,030 |
| Cargo capacity (lb) | 1,970 | 4 of 17 | 1,135–3,172 |
| Hitch weight (lb) | 2,219 | 14 of 17 | 1,144–2,708 |
| Length | 42 ft 6 in | 13–17 of 17 | 29 ft 1 in–42 ft 6 in |
| Fresh tank (gal) | 48 | 8–17 of 17 | 40–48 |
| Grey tank (gal) | 120 | 16 of 17 | 33–135 |
| Black tank (gal) | 75 | 17 of 17 | 33–75 |
Either side of it by GVWR: Shasta Phoenix 334FL matches it at 15,000 lb GVWR; Shasta Phoenix 367BH is 500 lb heavier (15,500 lb GVWR).
| Nearest Shasta Phoenix siblings | Length | Sleeps | Dry (lb) | GVWR (lb) | CCC (lb) | Hitch (lb) | Fresh (gal) |
|---|---|---|---|---|---|---|---|
| Shasta Phoenix 373MBRB | 42 ft 6 in | — | 13,030 | 15,000 | 1,970 | 2,219 | 48 |
| Shasta Phoenix 370BAF | 42 ft 6 in | — | 12,421 | 14,500 | 2,079 | 2,152 | 48 |
| Shasta Phoenix 381DBL | 42 ft 6 in | — | 12,185 | 14,500 | 2,315 | 2,040 | 48 |
| Shasta Phoenix 367BH | 42 ft 6 in | — | 12,328 | 15,500 | 3,172 | 2,194 | 48 |
| Shasta Phoenix 389DEK | 42 ft 4 in | — | 12,721 | 14,500 | 1,779 | 2,320 | 48 |
| Shasta Phoenix 391MBH | 42 ft 2 in | — | 12,445 | 14,500 | 2,055 | 2,240 | 48 |
All 17 Shasta Phoenix floorplans: Shasta Phoenix line hub.
| Other lines, nearest by GVWR | GVWR (lb) | Dry (lb) | Sleeps | Length |
|---|---|---|---|---|
| Shasta Phoenix 373MBRB | 15,000 | 13,030 | — | 42 ft 6 in |
| Brookstone 344FL | 15,000 | 12,789 | — | 42 ft 2 in |
| Chaparral 334FL | 15,000 | 12,400 | — | 42 ft 6 in |
| ElkRidge 32RK | 15,000 | 10,607 | 4 | 36 ft 6 in |
| Mesa Ridge 376FBH | 15,000 | 12,240 | — | 42 ft 3 in |
| Avenue 35RKS | 14,995 | 11,450 | — | 36 ft 10 in |
| Model Z 2810 | 14,995 | 11,894 | — | 34 ft 9 in |
Against the Shasta Phoenix 373MBRB: the ElkRidge 32RK is 6 ft shorter.
08 Common questions about the Shasta Phoenix 373MBRB
How much does the Shasta Phoenix 373MBRB weigh?
13,030 lb dry; 15,000 lb GVWR, the most it may weigh loaded.
How much can the Shasta Phoenix 373MBRB carry?
1,970 lb, 13% of its GVWR (median across 334 fifth wheels here: 18%). A full fresh tank uses 398 lb of it.
What is the pin weight of the Shasta Phoenix 373MBRB?
2,219 lb as published, 17% of the dry weight (median across 540 fifth wheels here: 19%).
What size tow vehicle does the Shasta Phoenix 373MBRB need?
A tow rating of at least 15,000 lb, plus payload for the loaded pin weight, passengers and cargo.
What are the tank capacities on the Shasta Phoenix 373MBRB?
Fresh 48, grey 120, black 75 gallons. Off hookups, fresh water runs out first.
How long is the Shasta Phoenix 373MBRB?
42' 6" overall, tongue or pin box included.
From the figures above.
09 What this page publishes, and what it does not
11 of the 18 fields this catalogue tracks are published for the Shasta Phoenix 373MBRB. Not published: interior height, sleeps, slide count, axle count, tire specification, refrigerator, air conditioning.
Sourcing rules: methodology.
10 Manuals & documents
Sources: forestriverinc.com, library.rvusa.com (linked below); the full source note is at the foot of the page.
11 NHTSA safety record
NHTSA holds 8 recall campaigns and 1 owner complaint (model years 2005 on) against the Shasta Phoenix line (a recall and a complaint are not the same thing).
Too few reports to show a pattern. 1 complaint has been filed on this line — not enough to say what fails most often. It covers unknown or other.
Recall coverage here is not complete, and complaints are owners’ unverified reports (how this record is built). Check a specific VIN at NHTSA before you buy. Full tables are on the Shasta Phoenix line page.