2026 Forest River Columbus / Puma Mesa389FLH

The Columbus 389FLH has 2,026 lbs of cargo capacity between 14,529 lbs dry and its 16,555 lbs GVWR, 12% 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 2,555 lbs, 18% 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: 149 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 7th of 8 floorplans by dry weight, in a line that runs from 10,464 lbs to 14,664 lbs. It sits in the heavier third of the line.

Plan the tow on loaded weight, not the 14,529 lbs dry figure: half the published cargo capacity brings this plan to about 15,542 lbs, and the published GVWR of 16,555 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. 389FLH is a Columbus designation and this site does not decode it into a layout claim.

How the 389FLH 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.

• Cargo capacity, 2,026 lb: smallest of eight; next is the 379MBL (2,121 lb).
• Cargo capacity as a share of GVWR, 12.2%: smallest of eight; next is the 379MBL (12.6%).
• Dry weight, 14,529 lb: second-heaviest of eight, between the 388FKH (14,414 lb) and the 379MBL (14,664 lb).
• Pin weight as a share of dry weight, 17.6%: second-smallest of eight, between the 377DS (17.3%) and the 340RG (17.9%).
• GVWR, 16,555 lb: fourth-lowest of eight, between the 377DS (16,480 lb) and the 383RLH (16,635 lb).
• Pin weight, 2,555 lb: fourth-lightest of eight, between the 377DS (2,480 lb) and the 383RLH (2,635 lb).
• Grey tank, 110 gal: shared with the 388FKH; of eight, four smaller and two larger, nearest the 340RG, 360FK and two others (78 gal) and the 377DS and 384RKH (117 gal).
• Black tank, 39 gal: smallest of eight, level with the 340RG, 360FK and 379MBL; next are the 383RLH and 384RKH (71 gal).
• Length, 42 ft 7 in: shared with the 377DS and 379MBL; of eight, three shorter and two longer, nearest the 383RLH (41 ft 5 in) and the 388FKH (42 ft 10 in).

Next to the 388FKH, the nearest lighter floorplan by dry weight, the 389FLH is 115 lb heavier by dry weight, has a GVWR 130 lb lower, has 245 lb less cargo capacity, has a pin weight 130 lb lighter, is 3 in shorter and has a black tank 39 gal smaller; the two publish the same exterior height, fresh tank and grey tank.

Next to the 379MBL, the nearest heavier floorplan by dry weight, the 389FLH is 135 lb lighter by dry weight, has a GVWR 230 lb lower, has 95 lb less cargo capacity, has a pin weight 230 lb lighter and has a grey tank 32 gal larger; the two publish the same length, exterior height, fresh tank and black 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), 31% of the 389FLH’s 2,026 lb cargo capacity, leaving 1,404 lb. Across 8 Columbus floorplans the water share runs 21% to 31%, and this plan’s is the highest. Nearest on that share: Columbus 379MBL at 29%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.120 S10.4.3).