320MKS: a rear galley in the second-shortest Reflection plan
Grand Design's drawing puts the 16-cubic-foot refrigerator in the rear door-side corner, with cabinets and a counter along the rear wall and a spray port outside it. The microwave over the range and the pantry sit in the door-side slide, and the island with the sink is in the rear half of the floor. Across from the galley, the off-door slide holds a booth dinette (swivel dinette optional) and theater seating. A tri-fold sofa backs onto the bath wall, and the 40-inch entertainment center is on the door side just behind the entry steps. Outside on that side are a griddle and a 1.6-cubic-foot refrigerator.
No other plan in the 2026 brochure arranges the kitchen this way; the other seven carry the refrigerator in an off-door slide. At 34 ft 9 in and 11,100 lb dry, the 320MKS is 2 of 8 on both length and dry weight, with only the 303RLS smaller.
320MKS drawing and figures, Grand Design 2026 Reflection brochure →320MKS specifications as published
What moving the 320MKS galley to the rear wall changes
The refrigerator, range, and pantry end up at the end of the trailer farthest from the pin. In the brochure numbers that does not translate into an unusually light hitch: 2,200 lb is 19.8% of dry weight, 5 of 8 lowest. The 324MBS, 100 lb heavier dry, carries 200 lb less on the pin. That comparison is arithmetic from two standard-build averages, not a weighing of either unit.
What the layout does change is where the day happens. The sofa, theater seating, dinette, and television are grouped around the entry door in the middle of the trailer, and the cooking happens at the far end, near the outside griddle. The front bedroom is the same one the 337RLS has: a 60-by-80-inch queen in an off-door slide, a king listed as optional, and washer/dryer prep at the front.
320MKS ranks among the eight fifth wheels
Things to try in the 320MKS rear kitchen
- Stand at the island and open the refrigerator in the rear corner. Check the door swing against the rear counter and whether someone can pass behind you while it is open.
- Bring the door-side slide in and try to reach the range, the microwave, and the pantry. All three ride in that slide, so this is the kitchen you have at a lunch stop.
- Sit on the tri-fold sofa and in the theater seating and look for the 40-inch screen. It stands on the door side beside the entry, so check the sight line from each seat and whether the door swing clears it.
Rear-kitchen 320MKS or a rear living room?
The obvious alternatives keep the same front bedroom or the same short length and put the sofa at the back instead.
Identical front bedroom labels, with the kitchen moved to the off-door slide and a tri-fold sofa on the rear wall. It is 0 ft 10 in longer, 100 lb heavier, and 100 lb heavier on the hitch.
Open record →Shorter rear living planReflection 303RLS1 ft 11 in shorter, 1,000 lb lighter, and 220 lb lighter on the hitch. Its queen sits lengthwise without a king option or a washer/dryer prep label, and its tanks are larger: 87 gal gray and 47 gal black against 78 and 39.
Open record →Adds bunks and a rear loungeReflection 324MBSA 92-inch U-shaped lounge at the rear and a mid-ship bunk slide, for 2 ft 3 in more length and 100 lb more dry weight, while the hitch figure drops by 200 lb.
Open record →Why the 320MKS record rests on the 2026 brochure
Every figure and room label here comes from Grand Design's 2026 Reflection brochure, read again on 2026-09-26. When checked that day, Grand Design's site had no current 320MKS plan page, so the brochure is the only manufacturer source for this plan. Its weights are the average for a standard build and its height excludes a second air conditioner. GVWR, sleeping capacity, and slide count in the table come from RVUSA's 2026 spec guide.