01 What makes it unique
Northwood lists the Nash 18FM at 5,662 lb dry, a GVWR of 7,400 lb, a net carrying capacity of 1,738 lb and a tongue weight of 556 lb. Its dry weight plus its carrying capacity comes to exactly its GVWR.
It is 22’11” long and 11’6″ incl. AC high. Northwood prints its tanks as 82 gal fresh, 47 gal grey, 36 gal black.
Among the 9 Nash floorplans Northwood’s Nash model pages on northwoodmfg.com (no model year stated) lists with a published dry weight, it is number 2 from the lightest, in a range from 4,766 lb (Nash 17K) to 6,950 lb (Nash 25KT). Every figure in that comparison is Northwood’s, read from the same set of model pages.
Every number on this page was read on 6 Nov 2026 from Northwood’s own Nash model pages on northwoodmfg.com (no model year stated) for the Nash 18FM, which names no model year; the figures are shown as the maker published them, and no year is claimed for them.
How the 18FM differs from the other eight Nash floorplans. Most distinctive first. How these ranks are worked out.
- Tongue weight, 556 lb: lightest of nine; next is the 19BS (560 lb).
- Dry weight, 5,662 lb: second-lightest of nine, between the 17K (4,766 lb) and the 23D (5,740 lb).
- Cargo capacity, 1,738 lb: second-smallest of nine, between the 19BS (1,575 lb) and the 23D (1,760 lb).
- Length, 22 ft 11 in: second-shortest of nine, between the 17K (22 ft 4 in) and the 19BS (23 ft 7 in).
- Tongue weight as a share of dry weight, 9.8%: fourth-smallest of nine, between the 19BS (9.6%) and the 23D (10.6%).
- GVWR, 7,400 lb: lowest of nine, level with the 17K and 19BS; next is the 23D (7,500 lb).
- Cargo capacity as a share of GVWR, 23.5%: shared with the 23D; of nine, one smaller and six larger, nearest the 19BS (21.3%) and the 25KT (24.5%).
- Grey tank, 47 gal: largest of eight, level with the 19BS and 23CK; next are the 23D, 24B and 24SD (42 gal).
- Black tank, 36 gal: shared with the 17K and 23CK; of nine, five smaller and one larger, nearest the 23D, 24B and three others (35 gal) and the 19BS (42 gal).
Next to the 17K, the nearest lighter floorplan by dry weight, the 18FM is 896 lb heavier by dry weight, has 896 lb less cargo capacity, has a tongue weight 33 lb lighter, is 7 in longer, stands 5 in taller, has a fresh tank 2 gal larger and has a grey tank 12 gal larger; the two publish the same GVWR, black tank and sleeping capacity.
Next to the 23D, the nearest heavier floorplan by dry weight, the 18FM is 78 lb lighter by dry weight, has a GVWR 100 lb lower, has 22 lb less cargo capacity, has a tongue weight 50 lb lighter, is 2 ft 11 in shorter, has a grey tank 5 gal larger and has a black tank 1 gal larger; the two publish the same exterior height, fresh tank and sleeping capacity.
02 Full specifications
Dimensions
- Exterior length
- 22’11”
- Exterior height
- 11’6″ incl. AC
- Exterior width
- 8′
- Interior height
- Not published by Northwood
Weights
- Dry / unit base weight (UVW)
- 5,662 lb
- GVWR (max loaded)
- 7,400 lb
- Net cargo / payload (CCC)
- 1,738 lb
- Hitch / tongue weight
- 556 lb
Capacities
- Fresh water
- 82 gal
- Grey water
- 47 gal
- Black water
- 36 gal
Running gear
- Hitch type
- Bumper pull
- Tire size
- ST235/80R16
Sleeping & layout
- Sleeps
- 4
- Model year
- Not stated by Northwood; figures as published on Northwood's site (https://northwoodmfg.com/nash-18fm/), read 6 Nov 2026
- Body type basis (as printed)
- Nash listed under Travel Trailers menu
- Dry Axle Weight (approx. Lbs.)
- 5106
- Load Range
- E
- LPG Capacity (approx. lbs)
- 60
- CSA – Canadian Dealers Only
- YES
- Auto Ignition Furnace (1,000 BTUs)
- 25
- Weight basis (as printed)
- "Gross Dry Weight (approx. Lbs.)"; Northwood prints dry, hitch and dimension figures as approximate.
How these published figures sit against the rest of the catalogue: travel trailer tongue weight by size; fresh, grey and black tank sizes; camper trailer size chart.
Federal tire recalls naming this size. NHTSA’s recall file names ST235/80R16 in one tire recall: 21T018000 (Sailun Tire Americas, Inc., 2021; make SAILUN; models BLACKHAWK, BLACKLION, IRONHEAD, ROADX, SAILUN). A tire recall covers only the brands, lines and DOT date codes it lists, and this page does not know which brand of tire this trailer was built with, so read the brand and DOT code on your own sidewalls before relying on this list. Only 242 of NHTSA’s 788 tire recalls name a size in their summary, so a size with no match is not a clean record (NHTSA recall file, read 12 Oct 2026).
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 (7,400 lb) and the upper loaded tongue estimate (1,110 lb, a rule of thumb). Your vehicle’s placard and the trailer’s own weight label govern.
Loaded range: 10–15% of GVWR on the tongue, a rule of thumb, not a measurement of this unit. No truck ratings or hitch classes (why; NHTSA, DOT HS 809 433).
03 The Nash floorplan family
Northwood’s Nash model pages on northwoodmfg.com (no model year stated) lists 9 Nash floorplans; every one with a printed weight has a page here.
| Floorplan | Nominal | Sleeps | Notable |
|---|---|---|---|
| Nash 17K | 22’4″ | 4 | Profiled |
| Nash 18FM | 22’11” | 4 | Profiled |
| Nash 23D | 25’10” | 4 | Profiled |
| Nash 19BS | 23’7″ | 4 | Profiled |
| Nash 24SD | 27’3″ | 4 | Profiled |
| Nash 24B | 28’8″ | 8 | Profiled |
| Nash 23CK | 27’8″ | 4 | Profiled |
| Nash 25DS | 29’2″ | 6 | Profiled |
| Nash 25KT | 28’5″ | 4 | Profiled |
Northwood’s Nash model pages on northwoodmfg.com (no model year stated) lists 9 Nash floorplans. Every one with a printed weight has a page here.
04 Notes on this floorplan
What Northwood does not publish for the Nash 18FM
Northwood prints no interior height 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
4,766 lb dry and 7,400 lb GVWR, against this model’s 5,662 lb and 7,400 lb.
5,740 lb dry and 7,500 lb GVWR, against this model’s 5,662 lb and 7,400 lb.
06 Loading it for a trip
A full 82-gallon fresh tank is about 681 lb of water (water counts as cargo: 49 CFR 571.110 S9.3.2), 39% of the Nash 18FM’s 1,738 lb cargo capacity, leaving 1,057 lb (264 lb per rated berth). Across 9 Nash floorplans the water share runs 24% to 43%, and 1 gives up more than this one. Nearest on that share: Nash 23D at 39% and Nash 19BS at 43%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.110 S9.3.3).
07 Where this floorplan sits
Closest sibling: the Nash 19BS, nearest on the published figures. It differs on 5 of the 9 fields both publish (this plan first): length 22 ft 11 in vs 23 ft 7 in; dry weight 5,662 lb vs 5,825 lb; cargo capacity 1,738 lb vs 1,575 lb; hitch weight 556 lb vs 560 lb; black tank 36 gal vs 42 gal. They match on sleeps, GVWR, fresh tank and grey tank.
| Nash plans | This plan | Position, low to high | Range |
|---|---|---|---|
| GVWR (lb) | 7,400 | 1–3 of 9 | 7,400–9,200 |
| Dry weight (lb) | 5,662 | 2 of 9 | 4,766–6,950 |
| Cargo capacity (lb) | 1,738 | 2 of 9 | 1,575–2,750 |
| Hitch weight (lb) | 556 | 1 of 9 | 556–826 |
| Length | 22 ft 11 in | 2 of 9 | 22 ft 4 in–29 ft 2 in |
| Fresh tank (gal) | 82 | 5–9 of 9 | 80–82 |
| Grey tank (gal) | 47 | 6–8 of 8 | 35–47 |
| Black tank (gal) | 36 | 6–8 of 9 | 35–42 |
| Sleeps | 4 | 1–7 of 9 | 4–8 |
Either side of it by GVWR: Nash 17K matches it at 7,400 lb GVWR; Nash 19BS matches it at 7,400 lb GVWR.
| Nearest Nash siblings | Length | Sleeps | Dry (lb) | GVWR (lb) | CCC (lb) | Hitch (lb) | Fresh (gal) |
|---|---|---|---|---|---|---|---|
| Nash 18FM | 22 ft 11 in | 4 | 5,662 | 7,400 | 1,738 | 556 | 82 |
| Nash 19BS | 23 ft 7 in | 4 | 5,825 | 7,400 | 1,575 | 560 | 82 |
| Nash 23D | 25 ft 10 in | 4 | 5,740 | 7,500 | 1,760 | 606 | 82 |
| Nash 17K | 22 ft 4 in | 4 | 4,766 | 7,400 | 2,634 | 589 | 80 |
| Nash 24SD | 27 ft 3 in | 4 | 6,450 | 9,200 | 2,750 | 590 | 80 |
| Nash 25KT | 28 ft 5 in | 4 | 6,950 | 9,200 | 2,250 | 660 | 80 |
All 9 Nash floorplans: Nash line hub.
| Other lines, nearest by GVWR | GVWR (lb) | Dry (lb) | Sleeps | Length |
|---|---|---|---|---|
| Nash 18FM | 7,400 | 5,662 | 4 | 22 ft 11 in |
| Jay Feather 23RK | 7,400 | 5,780 | 4 | 28 ft 7 in |
| Mesa Ridge Lite MR2410RL | 7,400 | 5,465 | — | — |
| Mesa Ridge S-Lite 241BH | 7,400 | 5,685 | — | 29 ft 8 in |
| North Trail 240RK | 7,400 | 5,790 | 4 | 28 ft 7 in |
| Nash Camp 17K | 7,400 | 4,760 | 4 | — |
| Open Range Ultra Lite UT2410RL | 7,400 | 5,465 | — | — |
Against the Nash 18FM: the Jay Feather 23RK is 6 ft longer; the Mesa Ridge S-Lite 241BH is 7 ft longer.
08 Common questions about the Nash 18FM
How much does the Nash 18FM weigh?
5,662 lb dry; 7,400 lb GVWR, the most it may weigh loaded.
How much can the Nash 18FM carry?
1,738 lb, 23% of its GVWR (median across 1,416 travel trailers here: 23%). A full fresh tank uses 681 lb of it.
What is the tongue weight of the Nash 18FM?
556 lb as published, 10% of the dry weight (median across 2,002 travel trailers here: 12%).
What size tow vehicle does the Nash 18FM need?
A tow rating of at least 7,400 lb, plus payload for the loaded tongue weight, passengers and cargo.
How many people does the Nash 18FM sleep?
It is rated to sleep 4. 2 of the 9 Nash floorplans that publish a count sleep more.
What are the tank capacities on the Nash 18FM?
Fresh 82, grey 47, black 36 gallons. Off hookups, fresh water runs out first.
How long is the Nash 18FM?
22’11” overall, tongue or pin box included.
From the figures above.
09 What this page publishes, and what it does not
12 of the 18 fields this catalogue tracks are published for the Nash 18FM. Not published: interior height, slide count, axle count, awning, refrigerator, air conditioning.
Sourcing rules: methodology.
10 Manuals & documents
Sources: northwoodmfg.com (linked below); the full source note is at the foot of the page.
11 NHTSA safety record
NHTSA holds 3 recall campaigns and 1 owner complaint (model years 2005 on) against the Nash 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 trailer hitches.
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 Nash line page.