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FLOOR-PLAN RECORD · 2026

Solitude 414LJMJ

The heaviest and most specialized Solitude in the set, combining a rear bunk room, convertible work/sleep area, side party patio, and expanded water capacity.

Source checked
Solitude 414LJMJ scale drawing: 42 ft 10 in long, 13 ft 5 in tall Side elevation drawn to scale from the published exterior length of 42 ft 10 in and exterior height of 13 ft 5 in. The outline is a generic fifth-wheel shape, not a profile of this unit. Roof sits 1 in under a 13 ft 6 in limit. Overall length is 2 ft 10 in longer than a 40 ft pad. 13 FT 6 IN CLEARANCE 13 ft 5 in 42 ft 10 in overall 40 FT PAD Roof: 1 in under a 13 ft 6 in limit Length: 2 ft 10 in longer than a 40 ft pad SCALE DRAWING FROM PUBLISHED DIMENSIONS

Drawn to scale from the published 42 ft 10 in length and 13 ft 5 in height, on a generic outline: 1 in under a 13 ft 6 in roof limit and 2 ft 10 in longer than a 40 ft pad.

Why the 414LJMJ belongs on a different shortlist

The 414LJMJ is built around multi-person, long-stay use. Grand Design highlights a private rear bunk room, a work table that converts to sleep space, a side party patio with an outdoor kitchen, and a full-size deep-soak bathtub. Those features are not presented together on the other Solitude pages in this pilot.

Layout emphasis Bunk room, work space, and party patio
Length position 9 of 10 shortest
Dry-weight position 10 of 10 lightest

Who this floor plan fits

This layout is for buyers who need dedicated family or guest zones and expect the trailer to function as a destination living space. The patio and bunk/work areas provide reasons to choose it beyond simply wanting the largest available model.

Tradeoff to examine: Those features come with the highest published ratings in the group: 19,000 pounds dry and 23,500 pounds GVWR. Its towing, payload, axle, storage, and campsite requirements belong in a different planning tier from the 19,000-pound-GVWR Solitudes.

Review Grand Design's current 414LJMJ layout →

Specifications

Length42 ft 10 in
Dry weight19,000 lb
GVWR23,500 lb
Hitch / pin weight3,100 lb
Sleeping capacityUp to 6
Slides4
Fresh water83 gal
Gray water159 gal
Black water106 gal
Interior height97 in
Exterior height161 in

Weight implications for the 414LJMJ

Using the year-specific figures in this record, the 414LJMJ has 4,500 lb between its 19,000 lb dry weight and 23,500 lb GVWR. That is a rating comparison, not a promise that a particular trailer can carry that amount after options, fluids, batteries, and dealer-installed equipment.

Its published 3,100 lb pin weight equals about 16.3% of recorded dry weight. Loaded pin weight can change substantially, so this percentage is useful for comparing brochure records but not for approving a tow vehicle.

Within these ten Solitudes, this record ranks 10 of 10 from lightest to heaviest and 9 of 10 from shortest to longest. Check the truck's payload label, rear-axle rating, tire ratings, hitch, passengers, and cargo against the exact trailer before towing.

Capacity in practical context

Fresh water 83 gal
Gray water 159 gal
Black water 106 gal

The 414LJMJ records 83 gallons fresh, 159 gallons gray, and 106 gallons black, the highest combined gray/black capacity in this set. The calculated 4,500-pound dry-to-GVWR margin must still not be treated as usable payload without checking the exact unit's labels and loading limits.

Tank values are kept separate and shown exactly as represented in the year-specific source. Actual usable capacity and installed equipment should be confirmed on the unit.

414LJMJ comparisons that change the decision

These siblings were selected by layout purpose and measurable tradeoffs, not only by nearest published length. The differences below use the year-specific records on RVBlueprints.

Compare withSolitude 391DL Length42 ft 5 in Size difference5 in shorter Dry-weight difference3,500 lb lighter Compare withSolitude 388MBS Length42 ft 11 in Size difference1 in longer Dry-weight difference3,400 lb lighter Compare withSolitude 417KB Length41 ft 8 in Size difference1 ft 2 in shorter Dry-weight difference3,500 lb lighter
View every Solitude floor plan →

What to test during a 414LJMJ walkthrough

  • Deploy the side patio completely and measure the campsite width it requires, including railings and cooking clearance, before assuming it works on preferred sites.
  • Set the rear bunk room for both daytime work and nighttime sleeping, checking conversion effort, mattress dimensions, outlets, privacy, and emergency egress.
  • Fill the bathtub to a realistic level only after confirming water-heater capability, gray-tank routing, cargo impact, and how the exact unit is intended to drain.
  • Have a qualified towing professional review the 23,500-pound GVWR, estimated loaded pin, hitch, truck payload, rear axle, tires, and licensing requirements together.
Source context

Source note

The brochure states that listed exterior height excludes the second A/C.