01 What makes it unique
The 3520 takes the 3500’s layout and rotates the entire living room 90 degrees. Where the 3500 puts a four-seat party sofa on the campside wall, the 3520 splits that seating into two double recliners with heat and massage facing a televator TV and an electric fireplace — a conversation-and-TV arrangement built for full-time living rather than a weekend party. Dual opposing slides are floor-flush, so there is no slide step to cross, and the chef gets the same waterfall island that converts to a peninsula with a spice rack and a pull-down utensil tray. The 11-foot garage carries a max-space half bath with fold-away walls plus a loft, and a washer/dryer-prep option deletes the half bath for loading length.
It tows like the 3500. RVUSA lists a published 22,000-pound GVWR against a 17,496-pound dry weight, leaving a 4,504-pound payload and a 3,150-pound dry pin. The full Model G running gear is standard — the single continuous I-beam chassis on three 8,000-pound axles, the 30,000-pound Gen-Y pin box, SumoSprings and disc brakes — and the front private bedroom carries a king bed slide-out, under-bed drawers with motion lights, a dresser with hidden storage and a walk-in closet with cordless-vacuum prep.
At an MSRP of $210,828 it sits just above the 3500. For a full-timing couple who wants the same chassis and garage but a living room arranged for watching and talking rather than a big party sofa — with floor-flush slides and a televator — the 3520 is the layout to choose.
02 Full specifications
Dimensions
- Exterior length
- 40' 0"
- Exterior width
- 8' 5"
- Exterior height
- 13' 4"
- Garage / flex length
- 11' flex garage + half bath
Weights
- Dry / unit base weight
- 17,496 lbs
- GVWR (max loaded)
- 22,000 lbs
- Net cargo / payload
- 4,504 lbs
- Dry pin weight
- 3,150 lbs
Capacities
- Fresh water
- 150 gal
- Grey water
- 156 gal
- Black water
- 85 gal
- Refrigerator
- 19 cu ft
Construction
- Frame
- Single continuous I-beam · Gen-Y certified chassis
- Walls
- Laminated Azdel · high-gloss gel-coat fiberglass · full-body paint
- Insulation
- Industry-best package · enclosed heated underbelly
- Garage
- Tough-ply floor & walls · Zero-Gravity ramp door · 3-season patio doors
Running gear
- Axles
- 3 (8,000 lb) · 8,000 lb leaf springs · disc brakes std
- Hitch
- Fifth-wheel (in-bed) · 30k Gen-Y Executive Torsion Flex pin box
- Suspension
- SumoSprings · banded TPMS w/ wireless display
- Tires
- 16-ply Load Range H Cooper Work Series · aluminum wheels
Galley & bath
- Cooktop
- Residential range · GE Energy Star appliances
- Refrigerator
- 19 cu ft · 12-volt GE
- A/C
- Triple GE low-profile 13.5k w/ heat pump (main + bedroom + garage)
- Bath
- Bath and a half
Sleeping & layout
- Sleeps
- Up to 6
- Slides
- 3
- Awnings
- 4
- Primary bed
- King bed slide-out
Verified specs, drawn to scale
Original graphics built from this floorplan’s own verified figures.
Loaded weight budget
Size, drawn to scale
Holding tanks
These graphics are generated from the same verified record that builds the table above, and are published under this site’s own licence — nothing here is traced from, or derived from, a manufacturer drawing or photo. Where a figure is not published for this plan, the graphic that would need it is omitted rather than estimated. The full record is in the published dataset.
What it takes to tow this
Built from this floorplan’s verified weights. We publish the trailer side only.
We do not publish tow ratings for specific trucks. A single model can vary by thousands of pounds depending on engine, axle ratio, cab, drivetrain and package — the only authoritative figure is the one on your own door jamb. Loaded pin percentages are industry convention for fifth wheels (15–25% of loaded weight), not a measurement of this unit. Hitch classes are not used here as a rating: SAE J684 covers trailers to 10,000 lb GVWR and does not define Class V, and capacity boundaries differ between manufacturers — read the rating stamped on your hitch.
03 The Model G floorplan family
The Brinkley Model G is the brand's luxury fifth-wheel toy-hauler line — a residential interior and an automotive exterior wrapped around a multi-purpose garage/flex space. The line runs to nine floorplans for 2026; the seven with published weights are profiled here in full, and the two front-office plans are catalogued on the line hub pending weight publication. The 3520 on this page is highlighted; each other profiled plan links to its own page.
| Floorplan | Nominal | Sleeps | Notable |
|---|---|---|---|
| 3250 | 38 ft | 6 | Garage-with-loft entry, L/U sofa, shortest garage |
| 3500 | 40 ft | 6 | Mid-kitchen waterfall island, 11' garage + loft, king bed |
| 3520 | 40 ft | 6 | 3500 living room rotated 90° (dual recliners), flex garage |
| 4000 | 45 ft | 5 | 16' Garage-Mahal + loft + half bath, waterfall island |
| 4100 | 46 ft | 8 | 12'6" garage, walk-in closet, kitchen island |
| 3950 | 45 ft | 8 | 14' garage with loft, u-shaped sofa |
| 3970 | 45 ft | 6 | 14' garage, TWO full baths |
| 4150 | 46 ft | 8 | Front office (remote-work) — weights not yet published |
| 4170 | 46 ft | 8 | Front office variant — weights not yet published |
The Brinkley Model G is the luxury fifth-wheel toy-hauler line from Brinkley RV, an independent manufacturer founded by RV-industry veterans. The full line runs to nine floorplans for 2026; seven are profiled here and two front-office plans are catalogued above pending weight publication. Every plan rides a single continuous I-beam chassis on three 8,000-pound axles with 8,000-pound leaf springs, a 30,000-pound Gen-Y Executive Torsion Flex pin box, SumoSprings and disc brakes as standard, and pairs a residential interior with an automotive exterior and a multi-purpose garage/flex space with a Zero-Gravity ramp door. Each ships with a 19-cubic-foot 12-volt refrigerator, triple GE low-profile 13,500-BTU heat-pump air conditioners, an 800-watt solar package, a FlexPower 5500 dual-fuel inverter generator and a Rockford Fosgate audio system. Body specifications (lengths, heights, payload, tanks, sleeping, slides and awnings) are RVUSA-verified against the 2026 structured spec records, each page fp-slug and title checked; dry weight, GVWR, payload and pin weight are published per plan, and each plan's dry weight plus payload equals its GVWR exactly. A toy hauler's real loaded pin weight runs well above the base figure — always weigh the loaded coach and confirm against your truck's payload and rear-axle ratings.
04 What owners & reviewers report
Living room rotated 90°
Two double recliners with heat and massage facing a televator and fireplace — conversation-and-TV seating instead of a party sofa.
Floor-flush slides
Both opposing slides are floor-flush — no raised slide floor to step over, a full-timer comfort detail.
Flex garage, half bath optional
An 11-foot garage with a max-space half bath that folds away — or a washer/dryer-prep option that deletes the half bath for loading length.
Biggest black tank here
An 85-gallon black tank — the largest among the shorter Model G plans, for longer stays.
05 How it compares
The mechanically near-identical sibling with a classic four-seat sofa and mid-coach kitchen — lower price, more payload.
A 16-foot “Garage-Mahal” with loft and half bath — far more garage if your toys need the room.
Brinkley’s mid-size rear-patio coach — much lighter and shorter if you want a patio without a full garage.
06 Loading it for a trip
This floorplan carries its water comfortably. A full 150-gallon fresh tank is roughly 28% of the 4,504-pound cargo capacity, leaving the 3520 with a usable gear budget even when you tow full.
| Weight budget | Figure | What it means |
|---|---|---|
| Cargo capacity as published (CCC) | 4,504 lb | Everything you add: gear, water, propane, batteries, food, people’s belongings. |
| Fresh tank filled (150 gal × 8.34 lb) | −1,251 lb | Water is the heaviest thing most owners add, and it is added first. |
| Cargo budget left with a full fresh tank | 3,253 lb | 28% of this plan’s capacity is spent before a single bag is loaded. |
| Per sleeping position, water aboard | 542 lb | A rough share of what is left across the 6 berths this plan sleeps. |
The published dry pin weight of 3,150 pounds is 18% of this floorplan’s 17,496-pound dry weight. Fifth-wheel pin weight rides in the bed of the truck, so it comes off payload rather than off tow rating — and it rises with the trailer as you load it, not in proportion to what you put over the axles.
Nothing above changes the ceiling. Loaded to its 22,000-pound GVWR the 3520 is towing 4,504 pounds more than its 17,496-pound dry figure, and that is the number your vehicle has to be rated for — not the brochure weight.
Tank balance is generous here: 150 gallons of fresh against 156 grey and 85 black, so waste capacity keeps pace with supply and the fresh tank is the constraint that ends a dry stay.
07 Where this floorplan sits
Ranked by GVWR, the 3520 sits 3 of 7 in the Model G line: 22,000 pounds against a line that runs from 22,000 to 23,000 pounds. That position is the useful thing to know, because the plans immediately either side of it are the real alternatives.
Either side of it in the same line: Model G 3500 matches it exactly at 22,000 lb GVWR; and Model G 3950 is 1,000 pounds heavier at 23,000 lb GVWR.
2 other Model G plans share this floorplan’s 22,000 lb GVWR, so the ranking above separates plans that tow to the same ceiling. On a shared chassis the figure that actually differs between them is cargo capacity and where the weight sits, not the rating.
| Comparable fifth wheels | GVWR (lb) | Dry (lb) | Sleeps | Length |
|---|---|---|---|---|
| 3520 | 22,000 | 17,496 | 6 | 40 ft 0 in |
| Momentum 394G | 22,500 | 16,400 | 7 | 44 ft 11 in |
| Cyclone 3913 | 21,000 | 15,435 | 8 | 46 ft 5 in |
| Nightfall 397NHD | 21,000 | 15,674 | — | 45 ft 0 in |
| Sandstorm 4017GX | 21,000 | 15,674 | — | 45 ft 0 in |
| Seismic 395 | 21,000 | 16,075 | 7 | — |
| Solitude 414LJMJ | 23,500 | 19,000 | 6 | 42 ft 10 in |
Against the 3520: the Momentum 394G is 500 lb heavier and 5 ft longer and sleeps 1 more; the Cyclone 3913 is 1,000 lb lighter and 6 ft longer and sleeps 2 more; the Nightfall 397NHD is 1,000 lb lighter and 5 ft longer. Those are differences in the published numbers only — what they cost, how they are built and how they live are separate questions each of those pages answers on its own terms.
Those are the nearest fifth wheels from other lines by weight — one per line, picked by proximity on that figure and nothing else. They are listed so the same tow vehicle can be checked against real alternatives, not because they are equivalent inside; layout, build and price diverge sharply across that group.
For scale, the Model G floorplans profiled here run 16,967 to 18,700 pounds dry and 38 to 46 feet of exterior length across 7 plans. Where a floorplan falls in that spread usually says more about which vehicle can tow it, and which site it fits, than the layout name does.
Every profiled floorplan in this line, with the full weight table, is on the Model G line hub.
08 Common questions about the 3520
How much does the 3520 weigh?
It leaves the factory at 17,496 pounds dry, and its manufacturer-set loaded ceiling (GVWR) is 22,000 pounds. Real towing weight lands between the two and depends entirely on what you load. Use the GVWR when matching a tow vehicle; the dry figure is only useful for comparing floorplans against each other.
How much can the 3520 carry?
Cargo carrying capacity is 4,504 pounds. That is the whole budget: water, propane, batteries, gear and everything you bring. Filling the 150-gallon fresh tank uses about 1,251 pounds of that.
What is the pin weight of the 3520?
The published dry pin weight is 3,150 pounds. It is measured empty; loaded, it runs higher, and it comes out of your tow vehicle’s payload rather than its tow rating.
What size tow vehicle does the 3520 need?
Your vehicle needs a tow rating of at least 22,000 pounds — this floorplan’s GVWR — and enough payload left over for the hitch load, passengers and anything in the bed. This site does not publish tow ratings for specific vehicles, because one truck model varies by thousands of pounds across engine, axle ratio, cab and package. The figure that governs is the payload sticker on your own door jamb.
How many people does the 3520 sleep?
It is rated to sleep 6. Rated sleeping positions include convertible furniture, so count the beds against how you actually travel rather than against the number.
What are the tank capacities on the 3520?
Fresh 150 gallons, grey 156 gallons, black 85 gallons. Tank sizes set how long the floorplan can sit away from hookups, and the smallest of the three is what ends the stay.
How long is the 3520?
Exterior length is 40' 0". Measure against your site length and your storage before committing — the exterior figure is the one that has to fit, and it includes the tongue or pin box.
Every figure in these answers is read from this page’s verified specification table. Where the manufacturer publishes nothing, the question is not answered rather than estimated.
09 What this page publishes, and what it does not
This catalog tracks 18 specification fields per floorplan. Named sources publish 17 of them for the 3520. The rest are not shown, because the alternative is reading a figure across from a sibling floorplan or from what the segment usually does — and a number nobody published is worth less than an admitted gap.
Not published for this floorplan: interior height, tire size (a tire description is published, a size is not). If you find one of these in a manufacturer document for this plan, it belongs on this page.
The completeness figure at the foot of this page (97%) measures the same thing on the full field set: it is a measurement of how much this floorplan’s manufacturer publishes, not of how much research went into the page.
How every figure here was sourced and checked is set out on the methodology page.
11 NHTSA safety record
This floorplan belongs to the Model G line, and NHTSA holds 4 recall campaigns and 1 owner complaint against that line. They are separate records and are not added together — a recall is a manufacturer-confirmed defect with a remedy; a complaint is one owner’s account, which NHTSA does not verify.
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 electrical system.
Recall coverage is not complete — our harvest of NHTSA’s recall API ran 1,556 queries, of which 0 failed and 242 returned an explicit zero. A line can still be under-reported where NHTSA files a roster under a parent name, or where a match rests on the wording of the recall rather than its model field. Complaints come from the complete bulk file but are unverified and self-selected: a high count tracks how many units a line sold at least as much as how well it was built. Check a specific VIN at NHTSA before you buy. Full tables are on the Model G line page.