01 What makes it unique
Ember lists the 2027 E-Series 12FK at 1,855 lb unloaded (UVW), with a GVWR of 3,500 lb, a cargo carrying capacity of 1,645 lb and a hitch weight of 295 lb. Its UVW plus its cargo capacity comes to exactly its GVWR.
It is 15' 9" long and 7' 0" high with the air conditioner, with 26 gal fresh (Ember prints no grey or black tank figure for it). Fresh water weighs about 8.3 lb per US gallon, so a full fresh tank uses roughly 216 lb of the cargo capacity before anything else is loaded.
Among the 12 E-Series floorplans Ember lists for 2027 with a published weight, it is number 2 by unloaded weight, in a range from 1,740 lb (12RK) to 6,130 lb (26ETS). Every figure in that comparison is Ember’s, for the same model year.
Every number on this page was read on 5 Nov 2026 from Ember’s own floorplan page for the E-Series 12FK, whose structured data names the model year 2027.
How the 12FK differs from the other eleven E-Series floorplans. Most distinctive first. How these ranks are worked out.
- Tongue weight as a share of dry weight, 15.9%: largest of twelve; next is the 12RK (14.7%).
- Dry weight, 1,855 lb: second-lightest of twelve, between the 12RK (1,740 lb) and the 18FBE (4,130 lb).
- GVWR, 3,500 lb: second-lowest of twelve, between the 12RK (3,450 lb) and the 18FBE (5,580 lb).
- Cargo capacity as a share of GVWR, 47%: second-largest of twelve, between the 18RBE (26.6%) and the 12RK (49.6%).
- Tongue weight, 295 lb: second-lightest of twelve, between the 12RK (255 lb) and the 18FBE (470 lb).
- Length, 15 ft 9 in: shortest of twelve, level with the 12RK; next is the 18FBE (21 ft 4 in).
- Exterior height, 7 ft: lowest of twelve, level with the 12RK; next are the 21FBE, 21RKE and five others (11 ft 2 in).
- Fresh tank, 26 gal: smallest of twelve, level with the 12RK; next are the 18FBE, 18RBE and eight others (55 gal).
- Cargo capacity, 1,645 lb: sixth-smallest of twelve, between the 22ETS (1,620 lb) and the 24RLD (1,670 lb).
Next to the 12RK, the nearest lighter floorplan by dry weight, the 12FK is 115 lb heavier by dry weight, has a GVWR 50 lb higher, has 65 lb less cargo capacity and has a tongue weight 40 lb heavier; the two publish the same length, exterior height and fresh tank.
Next to the 18FBE, the nearest heavier floorplan by dry weight, the 12FK is 2,275 lb lighter by dry weight, has a GVWR 2,080 lb lower, has 195 lb more cargo capacity, has a tongue weight 175 lb lighter, is 5 ft 7 in shorter, stands 4 ft 3 in lower and has a fresh tank 29 gal smaller.
02 Full specifications
Dimensions
- Exterior length
- 15' 9"
- Exterior height
- 7' 0" (with A/C)
- Exterior width
- 83.5"
- Interior height
- Not published by Ember
Weights
- Dry / unit base weight (UVW)
- 1,855 lb
- GVWR (max loaded)
- 3,500 lb
- Net cargo / payload (CCC)
- 1,645 lb
- Hitch / tongue weight
- 295 lb
Capacities
- Fresh water
- 26 gal
- Grey water
- Not published by Ember
- Black water
- Not published by Ember
- Propane
- Not published by Ember
Running gear
- Hitch type
- Bumper pull
- Tire size
- 15"
Sleeping & layout
- Sleeps
- 2-3
- Awning
- -->
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.
Drawn to scale
Weight budget
Size, with end view
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 (3,500 lb) and the upper loaded tongue estimate (525 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 E-Series floorplan family
Ember lists 12 E-Series floorplans for 2027; this site profiles every one with a published weight, from Ember’s own floorplan pages.
| Floorplan | Nominal | Sleeps | Notable |
|---|---|---|---|
| 12RK | 15' 9" | 1-2 | Profiled |
| 12FK | 15' 9" | 2-3 | Profiled |
| 18FBE | 21' 4" | 2-4 | Profiled |
| 18RBE | 21' 10" | 2-4 | Profiled |
| 19ETS | 23' 4" | 5-8 | Profiled |
| 21RKE | 25' 3" | 2-4 | Profiled |
| 21FBE | 25' 11" | 2-4 | Profiled |
| 22MLQ | 27' 1" | 2-4 | Profiled |
| 22ETS | 27' 1" | 5-8 | Profiled |
| 24RLD | 28' 7" | 2-4 | Profiled |
| 25RUD | 30' 1" | 2-4 | Profiled |
| 26ETS | 31' 7" | 5-8 | Profiled |
Ember lists 12 E-Series floorplans. Every 2027 plan with a published weight has a page here; the rest are catalogued with the reason against each.
04 Notes on this floorplan
What Ember does not publish for the 12FK
Ember’s page prints no axle count and no interior height against this floorplan, so none is given. Nothing is filled from a sibling floorplan, 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
1,740 lb UVW and 3,450 lb GVWR, against this plan’s 1,855 lb and 3,500 lb.
4,130 lb UVW and 5,580 lb GVWR, against this plan’s 1,855 lb and 3,500 lb.
06 Loading it for a trip
A full 26-gallon fresh tank is about 216 lb of water (water counts as cargo: 49 CFR 571.110 S9.3.2), 13% of the 12FK’s 1,645 lb cargo capacity, leaving 1,429 lb (476 lb per rated berth). Across 12 E-Series floorplans the water share runs 13% to 31%, and 10 give up more than this one. Nearest on that share: E-Series 12RK at 13% and E-Series 25RUD at 25%. 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 E-Series 12RK, nearest on the published figures. It differs on 5 of the 7 fields both publish (this plan first): sleeps 3 vs 2; dry weight 1,855 lb vs 1,740 lb; GVWR 3,500 lb vs 3,450 lb; cargo capacity 1,645 lb vs 1,710 lb; hitch weight 295 lb vs 255 lb. They match on length and fresh tank.
| E-Series plans | This plan | Position, low to high | Range |
|---|---|---|---|
| GVWR (lb) | 3,500 | 2 of 12 | 3,450–7,595 |
| Dry weight (lb) | 1,855 | 2 of 12 | 1,740–6,130 |
| Cargo capacity (lb) | 1,645 | 6 of 12 | 1,450–1,815 |
| Hitch weight (lb) | 295 | 2 of 12 | 255–705 |
| Length | 15 ft 9 in | 1–2 of 12 | 15 ft 9 in–31 ft 7 in |
| Fresh tank (gal) | 26 | 1–2 of 12 | 26–55 |
| Sleeps | 3 | 2 of 12 | 2–8 |
Either side of it by GVWR: E-Series 12RK is 50 lb lighter (3,450 lb GVWR); E-Series 18FBE is 2,080 lb heavier (5,580 lb GVWR).
| Nearest E-Series siblings | Length | Sleeps | Dry (lb) | GVWR (lb) | CCC (lb) | Hitch (lb) | Fresh (gal) |
|---|---|---|---|---|---|---|---|
| E-Series 12FK | 15 ft 9 in | 3 | 1,855 | 3,500 | 1,645 | 295 | 26 |
| E-Series 12RK | 15 ft 9 in | 2 | 1,740 | 3,450 | 1,710 | 255 | 26 |
| E-Series 18FBE | 21 ft 4 in | 4 | 4,130 | 5,580 | 1,450 | 470 | 55 |
| E-Series 18RBE | 21 ft 10 in | 4 | 4,175 | 5,690 | 1,515 | 540 | 55 |
| E-Series 21RKE | 25 ft 3 in | 4 | 4,975 | 6,695 | 1,720 | 535 | 55 |
| E-Series 21FBE | 25 ft 11 in | 4 | 5,070 | 6,795 | 1,725 | 580 | 55 |
All 12 E-Series floorplans: E-Series line hub.
| Other lines, nearest by GVWR | GVWR (lb) | Dry or base (lb) | Sleeps | Length |
|---|---|---|---|---|
| 12FK | 3,500 | 1,855 | 3 | 15 ft 9 in |
| Aliner Amp | 3,500 | 2,600 | — | 18 ft 0 in |
| Bambi 16RB | 3,500 | 3,150 | 4 | 16 ft 3 in |
| Basecamp 16X | 3,500 | 2,700 | 2 | 16 ft 2 in |
| Colt 13RD | 3,500 | 2,550 | 4 | 16 ft 1 in |
| Jay Feather 15TBSL | 3,500 | 2,515 | 2 | 17 ft 6 in |
| Jay Flight 130BH | 3,500 | 2,460 | 4 | 16 ft 1 in |
Against the 12FK: the Aliner Amp is 2 ft longer; the Bambi 16RB sleeps 1 more; the Basecamp 16X sleeps 1 fewer.
08 Common questions about the 12FK
How much does the 12FK weigh?
1,855 lb dry; 3,500 lb GVWR, the most it may weigh loaded.
How much can the 12FK carry?
1,645 lb, 47% of its GVWR (median across 1,010 travel trailers here: 23%). A full fresh tank uses 216 lb of it.
What is the tongue weight of the 12FK?
295 lb as published, 16% of the dry weight (median across 1,413 travel trailers here: 12%).
What size tow vehicle does the 12FK need?
A tow rating of at least 3,500 lb, plus payload for the loaded tongue weight, passengers and cargo.
How many people does the 12FK sleep?
Its published sleeping capacity is 2–3. 10 of the 12 E-Series floorplans that publish a count sleep more.
How long is the 12FK?
15' 9" overall, tongue or pin box included.
From the figures above.
09 What this page publishes, and what it does not
9 of the 18 fields this catalogue tracks are published for the 12FK. Not published: interior height, grey tank, black tank, slide count, axle count, awning, refrigerator, air conditioning, tire size (a description is published, a size is not).
Sourcing rules: methodology.
10 Manuals & documents
Sources: emberrv.com (linked below); the full source note is at the foot of the page.
11 NHTSA safety record
NHTSA holds 4 recall campaigns and 1 owner complaint (model years 2005 on) against the E-Series 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 E-Series line page.