2026 Forest River Columbus / Puma Mesa384RKH

The Columbus 384RKH has 2,876 lbs of cargo capacity between 13,814 lbs dry and its 16,690 lbs GVWR, 17% of that rating; filling its 75-gallon fresh tank at 8.3 lb a gallon uses 622 lbs of it (how to read trailer weights).

Pin weight is 2,690 lbs, 19% 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: 188 gallons of grey and black capacity against 75 gallons of fresh water, so fresh water runs out first (tank sizes by length).

Against the rest of the Columbus roster this is the 4th of 8 floorplans by dry weight, in a line that runs from 10,464 lbs to 14,664 lbs. It sits in the middle of the line by weight.

Plan the tow on loaded weight, not the 13,814 lbs dry figure: half the published cargo capacity brings this plan to about 15,252 lbs, and the published GVWR of 16,690 lbs is the limit (how to read trailer weights).

Forest River’s line listing and this floorplan’s own factory page agree on all 4 shared figures. Dry weight plus cargo capacity equals the published GVWR exactly. A missing row means Forest River does not publish that figure (how figures are verified).

Forest River publishes no floorplan description for this plan in the channel this page is built from - only the numeric specification block. Rather than describe a layout from the floorplan code, which would be a guess dressed as a fact, this page carries what the factory publishes and says where it stops. 384RKH is a Columbus designation and this site does not decode it into a layout claim.

How the 384RKH differs from the other seven Columbus floorplans. Most distinctive first. Sibling pages may cover other model years than this one (2026). How these ranks are worked out.

• Pin weight as a share of dry weight, 19.5%: largest of eight; next is the 383RLH (19.4%).
• Length, 43 ft: longest of eight; next is the 388FKH (42 ft 10 in).
• GVWR, 16,690 lb: second-highest of eight, between the 388FKH (16,685 lb) and the 379MBL (16,785 lb).
• Cargo capacity, 2,876 lb: second-largest of eight, between the 360FK (2,686 lb) and the 383RLH (3,026 lb).
• Pin weight, 2,690 lb: second-heaviest of eight, between the 388FKH (2,685 lb) and the 379MBL (2,785 lb).
• Dry weight, 13,814 lb: fourth-lightest of eight, between the 383RLH (13,609 lb) and the 377DS (14,339 lb).
• Cargo capacity as a share of GVWR, 17.2%: fourth-largest of eight, between the 388FKH (13.6%) and the 383RLH (18.2%).
• Grey tank, 117 gal: largest of eight, level with the 377DS; next are the 388FKH and 389FLH (110 gal).
• Black tank, 71 gal: shared with the 383RLH; of eight, four smaller and two larger, nearest the 340RG, 360FK and two others (39 gal) and the 377DS and 388FKH (78 gal).

Next to the 383RLH, the nearest lighter floorplan by dry weight, the 384RKH is 205 lb heavier by dry weight, has a GVWR 55 lb higher, has 150 lb less cargo capacity, has a pin weight 55 lb heavier, is 1 ft 7 in longer and has a grey tank 39 gal larger; the two publish the same exterior height, fresh tank and black tank.

Next to the 377DS, the nearest heavier floorplan by dry weight, the 384RKH is 525 lb lighter by dry weight, has a GVWR 210 lb higher, has 735 lb more cargo capacity, has a pin weight 210 lb heavier, is 5 in longer and has a black tank 7 gal smaller; the two publish the same exterior height, fresh tank and grey tank.

Columbus is a tight roster of six large fifth wheels and the numbers barely move across it: 13,609 to 14,664 lb dry over lengths of 41 feet 5 inches to 43 feet. What does move is cargo capacity, 2,026 to 3,026 lb - a thousand-pound spread on trailers within a thousand pounds of each other dry, so the useful comparison inside this line is payload rather than size. Pin weight runs 2,480 to 2,785 lb, and every plan ties out exactly against its published GVWR.

A full 75-gallon fresh tank is about 622 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 22% of the 384RKH’s 2,876 lb cargo capacity, leaving 2,254 lb. Across 8 Columbus floorplans the water share runs 21% to 31%, and 6 give up more than this one. Nearest on that share: Columbus 383RLH at 21% and Columbus 360FK at 23%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.120 S10.4.3).