2026 Forest River Wildwood Heritage Glen / Salem Hemisphere Fifth Wheels356QB

The Wildwood Heritage Glen Fifth Wheels 356QB leaves Forest River's factory at 11,249 lbs dry with 2,541 lbs of cargo capacity. Forest River publishes no GVWR for this line, so the loaded rating is not quoted on this page and is not computed from the other two figures. What the cargo number covers is defined by the factory: fresh water, gear, food, batteries and every dealer-installed accessory come out of it. Fresh water is 8.3 lb per gallon, so filling the 57-gallon fresh tank spends 473 lbs of the 2,541 lbs before anything else goes in.

Pin weight is 1,790 lbs, 16% of the dry weight as published; it rises as the trailer is loaded and comes off the truck’s payload, not its towing rating, so check it against the payload on your own door sticker (pin weight and payload).

Off hookups: 150 gallons of grey and black capacity against 57 gallons of fresh water, so fresh water runs out first (tank sizes by length).

Against the rest of the Wildwood Heritage Glen Fifth Wheels roster this is the 4th of 10 floorplans by dry weight, in a line that runs from 9,129 lbs to 15,044 lbs. It sits in the middle of the line by weight.

Plan the tow on loaded weight, not the 11,249 lbs dry figure: half the published cargo capacity brings this plan to about 12,519 lbs. Forest River publishes no loaded rating for this line, so the ceiling is the one on the trailer’s own weight label (how to read trailer weights).

Forest River’s line listing and this floorplan’s own factory page agree on all 4 shared figures. No GVWR is published for this line, so dry plus cargo has no rating to check against. A missing row means Forest River does not publish that figure (how figures are verified).

Forest River's own description of this floorplan reads: “No... Camper... Left... Behind... Bring the whole gang with you in the 356QB. The biggest bunkhouse in the Heritage Glen lineup, this floorplan sports 2 FULL BATHROOMS! Guests can use your 2nd bathroom through the rear entrance. A well-appointed outside kitchen rounds out this unbelievable floorplan.” That is the factory's marketing copy rather than a specification, and nothing in it is treated as a verified field on this page - layout descriptions, sleeping arrangements and feature claims in factory copy are not carried into the spec table unless the factory also publishes them as specifications.

How the 356QB differs from the other nine Wildwood Heritage Glen Fifth Wheels. Most distinctive first. Sibling pages may cover other model years than this one (2026). How these ranks are worked out.

• Pin weight, 1,790 lb: lightest of ten; next is the 280RE (1,870 lb).
• Pin weight as a share of dry weight, 15.9%: second-smallest of ten, between the 36FL (15.6%) and the 373MBRL (16.8%).
• Exterior height, 13 ft 2 in: second-lowest of ten, between the 369BL (13 ft 1 in) and the 321DRL (13 ft 3 in).
• Dry weight, 11,249 lb: fourth-lightest of ten, between the 321DRL (11,184 lb) and the 369BL (11,669 lb).
• Grey tank, 90 gal: fourth-largest of ten, between the ROOST43 (78 gal) and the 36FL (91 gal).
• Cargo capacity, 2,541 lb: fifth-smallest of ten, between the 376FAM (2,516 lb) and the 36FL (2,546 lb).
• Length, 43 ft: shared with the 369BL; of ten, five shorter and three longer, nearest the 380WDR (42 ft 10 in) and the 373MBRL (43 ft 8 in).
• Black tank, 60 gal: shared with the 376FAM and 380WDR; of ten, five smaller and two larger, nearest the 286RL (32 gal) and the ROOST43 (78 gal).

Next to the 321DRL, the nearest lighter floorplan by dry weight, the 356QB is 65 lb heavier by dry weight, has 300 lb less cargo capacity, has a pin weight 235 lb lighter, is 6 ft 11 in longer, stands 1 in lower, has a grey tank 30 gal larger and has a black tank 30 gal larger; the two publish the same fresh tank.

Next to the 369BL, the nearest heavier floorplan by dry weight, the 356QB is 420 lb lighter by dry weight, has 60 lb more cargo capacity, has a pin weight 360 lb lighter, stands 1 in taller, has a grey tank 28 gal larger and has a black tank 30 gal larger; the two publish the same length and fresh tank.

Heritage Glen's fifth-wheel roster is published as two tiers, the standard series and Elite Luxury, across eleven floorplans running 9,380 to 15,044 lb dry on pin weights of 1,790 to 2,830 lb. Forest River publishes no GVWR for any Heritage Glen fifth wheel, which means the one figure a buyer needs to compare against a truck's rating is absent from the factory's own spec channel.

A full 57-gallon fresh tank is about 473 lb of water, 19% of the 356QB’s 2,541 lb cargo capacity, leaving 2,068 lb. Across 10 Wildwood Heritage Glen Fifth Wheels floorplans the water share runs 14% to 23%, and 4 give up more than this one. Nearest on that share: Wildwood Heritage Glen Fifth Wheels 36FL at 19% and Wildwood Heritage Glen Fifth Wheels 376FAM at 19%.