Name: 2026 Grand Design Reflection 337RLS
Brand: Reflection

01 What makes it unique

The Reflection 337RLS is the rear-living couples’ coach a step up from the 303RLS — a longer fifth wheel with three slides, a rear tri-fold sofa and theater seating, a kitchen island and a private raised front bedroom. The extra length translates into a more open rear living area and, notably, a substantial payload. The Reflection residential build carries through: gel-coat fiberglass sidewalls, laminated aluminum framing, a one-piece TPO roof and a 16 cubic-foot 12-volt refrigerator.

It rides on a tandem axle with MORryde rubberized suspension and Goodyear Endurance tires, with a 13,995-pound GVWR on an 11,200-pound dry weight — leaving a generous 2,795 pounds of payload — and a 2,300-pound dry pin weight that wants a three-quarter-ton truck. A 74-gallon fresh tank, an 87-gallon gray and a 16 cubic-foot refrigerator support full-time stays, with the coach framed for a second air conditioner.

It sleeps four in a couples-first layout with one of the larger payloads in the line, at an MSRP near $92,400. For couples who want more rear-living space and real cargo headroom than the 303RLS and have a three-quarter-ton to tow it, the 337RLS is the comfortable middle of the full-size Reflection fifth wheels.

02 Full specifications

Dimensions

Exterior length: 35' 7"
Exterior width: 8' 0"
Exterior height: 12' 6"

Weights

Dry / unit base weight: 11,200 lbs
GVWR (max loaded): 13,995 lbs
Net cargo / payload: 2,795 lbs
Dry pin weight: 2,300 lbs

Capacities

Fresh water: 74 gal
Grey water: 87 gal
Black water: 47 gal
Refrigerator: 16 cu ft

Construction

Walls: Laminated aluminum-framed · gel-coat fiberglass
Roof: One-piece TPO · walk-on decking
Front cap: Painted fiberglass · Max Turn aero
Insulation: Side/rear R-9 · floor R-30* · roof R-40*

Running gear

Axles: 2 (tandem)
Hitch: Fifth-wheel (in-bed)
Suspension: MORryde rubberized equalizer
Tires: Goodyear Endurance · aluminum wheels

Galley & bath

Cooktop: 3-burner recessed
Refrigerator: 16 cu ft
A/C: 15K BTU ducted A/C
Water heater: Tankless on-demand · gas

Sleeping & layout

Sleeps: 4
Slides: 3
Hitch type: Fifth-wheel (in-bed)
Primary bed: Front queen/king

03 The Reflection floorplan family

Grand Design's Reflection is the brand's premium-mainstream towable family, and it spans four sub-lines across both tow types. The full-size Reflection fifth wheel is the heart of the range — a residential half-ton-to-three-quarter-ton coach with a 16 cubic-foot refrigerator and laminated aluminum construction. The Reflection travel trailer (the "...TS" plans) brings that same finish to a genuine bumper-pull, for buyers who want Reflection quality without an in-bed hitch. The Reflection 150 Series is the lightest fifth wheel — CURT Touring Coil suspension, standard solar and a 90-degree turning pin box for short-bed half-tons — and the Reflection 100 Series is the accessible short-bed fifth-wheel entry. The 337RLS on this page is highlighted; each other profiled plan links to its own page. The full Reflection catalogue runs to dozens of floorplans across all four; the highest-demand layouts are detailed here and the rest are catalogued on the line hub.

Floorplan	Sub-line	Type	Nominal	Sleeps	Notable
322FKTS	Reflection TT	TT	36 ft	6	Front-kitchen couples, rear bath, dual slide
317RSTS	Reflection TT	TT	35 ft	4	Rear-living dual-slide couples trailer
312BHTS	Reflection TT	TT	37 ft	6	Private bunkhouse + outside kitchen, triple slide
345RLTS	Reflection TT	TT	39 ft	6	Rear-living tri-slide, theater seating
342BHTS	Reflection TT	TT	38 ft	7	New 2026: rear private bunkhouse + outside kitchen, triple slide
28RL	Reflection 100	5W	31 ft	4	Half-ton rear-living, dual slide
27BH	Reflection 100	5W	32 ft	10	Half-ton bunkhouse, sleeps ten
32BH	Reflection 100	5W	36 ft	7	Bunkhouse flagship of the 100 Series
270BN	Reflection 150	5W	30 ft	2	Single-slide rear bunk, lightest range
295RL	Reflection 150	5W	33 ft	4	Rear-living dual-slide half-ton
303RLS	Reflection FW	5W	33 ft	4	Entry full-size rear-living, tri-slide
337RLS	Reflection FW	5W	36 ft	4	Rear-living couples full-size
320MKS	Reflection FW	5W	35 ft	4	Mid-kitchen + outside kitchen, desk
311BHS	Reflection FW	5W	37 ft	6	Private bunkhouse, quad slide
367BHS	Reflection FW	5W	41 ft	8	Bunk + loft full-timer flagship
324MBS	Reflection FW	5W	37 ft	6	Mid-bunk two-bedroom, tri-slide
360FLS	Reflection FW	5W	39 ft	6	Front-living flagship, five slides
362TBS	Reflection FW	5W	40 ft	8	Two-bedroom rear bath, sleeps eight
250ML	Reflection 150	5W	30 ft	3	Compact mid-living, single slide
260RD	Reflection 150	5W	30 ft	4	Lightest 5W, rear-living, big payload
298BH	Reflection 150	5W	35 ft	8	Half-ton bunkhouse, sleeps eight
22RK	Reflection 100	5W	27 ft	4	Smallest/cheapest 5W, biggest payload
24RL	Reflection 100	5W	30 ft	4	Rear-living, lightest pin, dual A/C

The full-size Reflection fifth wheel is the volume heart of the line, sitting below the luxury Solitude and new Influence fifth wheels and above the lighter 150 and 100 Series. Pin weights are factory dry figures and climb with cargo — even a half-ton-rated coach needs its loaded pin checked against the truck's payload and rear-axle rating. Additional Reflection fifth-wheel floorplans are catalogued on the line hub.

04 What owners & reviewers report

Big payload for the class

2,795 lb of payload on a 13,995-lb GVWR carries a full-timer’s load with genuine margin.

Open rear living

Three slides and a rear tri-fold sofa give a wide, residential living area for evenings in the coach.

Full-time-ready

74-gallon fresh, 87-gallon gray and residential finish suit extended and full-time use.

Wants a 3/4-ton

A 2,300-lb dry pin and 13,995-lb GVWR are beyond half-ton territory — weigh loaded and check truck ratings.

SOURCING — ownership notes to be expanded with cited threads from owner communities & forums per the data plan

05 How it compares

↓ Step down

Reflection 303RLS

The shorter rear-living best-seller — lighter pin and a half-ton-friendlier tow.

↔ Cross-shop

Reflection 320MKS

The mid-kitchen layout with an outside kitchen — same class, different galley emphasis.