2026 No Boundaries NB18.7

The No Boundaries NB18.7 is a nimble, family-friendly bunkhouse that packs full-feature comfort into a 21-foot-8 body with no slide. It pairs a front queen bed for adults with twin bunks for kids or guests, and a full rear-corner bath adds privacy and convenience at the back. The compact, well-organized layout keeps everything in reach, and a standard outdoor kitchen plus a 14-foot electric awning extend living space outside. It is one of the lightest true bunkhouses in the line — family sleeping at a genuinely towable weight.

At 3,988 pounds unloaded and 21 feet 8 inches, the NB18.7 is among the lightest profiled No Boundaries plans and an easy mid-size-SUV or half-ton tow, with a healthy 1,500-pound cargo capacity for a family loading water and gear. Forest River publishes a 5,488-pound GVWR for this plan directly (it equals the 3,988-pound unloaded weight plus the 1,500-pound cargo capacity exactly), so no derivation is needed. It carries balanced 30/30/30-gallon tanks. Standard equipment is the mandatory C-Series package: a 12V refrigerator, an air-fryer microwave, a 15,000-BTU air conditioner, an on-demand tankless water heater, a 200-watt solar panel with a 30-amp controller and inverter prep, a central vacuum, a power tongue jack and all-terrain tires with TPMS.

Construction is the No Boundaries laminate recipe — Azdel composite panels over an aluminum frame, a block-foam-insulated aluminum floor, a sealed and heated underbelly with a radiant foil barrier and 12V tank pads, and a fiberglass front cap with LED lighting — the same construction tier as Forest River’s r·pod and a step above the metal-sided value lines. An optional Beast Mode package adds an independent suspension, 400 watts of solar and a 2,000-watt inverter. For a family that wants real bunks plus a queen, a full bath and a standard outdoor kitchen at the lowest practical tow weight, the NB18.7 is the compact bunkhouse in the line.

Forest River’s No Boundaries (NoBo) is a rugged, adventure-lightweight travel-trailer line built “exceptionally light weight” to tow behind 4- and 6-cylinder vehicles. The NB18.7 on this page is highlighted; the other profiled plans link to their own pages. Profiled here are breadth-spanning floorplans — from the 20-foot front-queen compact to the 33-foot family bunkhouse with rear double bunks — with the rest of the roster catalogued on the line hub and profiled in demand order. Every No Boundaries plan ships with the mandatory C-Series package: a 12V fridge, a 15,000-BTU air conditioner, a tankless water heater, 200 watts of solar, all-terrain tires with TPMS, a standard outdoor kitchen and an electric awning.

This floorplan carries its water comfortably. A full 30-gallon fresh tank is roughly 17% of the 1,500-pound cargo capacity, leaving the NB18.7 with a usable gear budget even when you tow full.

The published dry tongue weight of 580 pounds is 15% of the 3,988-pound dry weight, which sits inside the 10–15% band usually quoted for stable towing. It is still a dry figure: loading the front pass-through and the fresh tank both push it up.

Nothing above changes the ceiling. Loaded to its 5,488-pound GVWR the NB18.7 is towing 1,500 pounds more than its 3,988-pound dry figure, and that is the number your vehicle has to be rated for — not the brochure weight.

Tank balance is generous here: 30 gallons of fresh against 30 grey and 30 black, so waste capacity keeps pace with supply and the fresh tank is the constraint that ends a dry stay.

Ranked by GVWR, the NB18.7 sits 5 of 17 in the Forest River No Boundaries line: 5,488 pounds against a line that runs from 4,855 to 8,253 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: Forest River No Boundaries NB19.2 is 578 pounds lighter at 4,910 lb GVWR; and Forest River No Boundaries NB18.3 is 115 pounds heavier at 5,603 lb GVWR.

Against the NB18.7: the Flagstaff E-Pro E201SBH is 7 lb heavier; the Rockwood Geo Pro G20SBH is 7 lb heavier; the Jay Feather 16DB is 12 lb heavier and 1 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 travel trailers 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 Forest River No Boundaries floorplans profiled here run 3,779 to 6,753 pounds dry and 20 to 33 feet of exterior length across 17 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 Forest River No Boundaries line hub.

This catalog tracks 18 specification fields per floorplan. Named sources publish 16 of them for the NB18.7. 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, sleeps, 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 (95%) 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.

Values on this page carrying an asterisk were derived by arithmetic from published figures, or come from a single source, rather than being printed directly by the manufacturer. The flag travels with the number into the downloadable spec sheet.

How every figure here was sourced and checked is set out on the methodology page.