2027 Keystone Montana3600RO

Keystone publishes three weights for the Montana 3600RO: a shipping weight of 16,365 lb, a carrying capacity of 3,045 lb and a hitch weight of 3,410 lb. Those are Keystone’s own terms, and this page keeps them. Keystone does not call the first figure dry or unloaded weight, does not say the hitch figure is measured dry, and publishes no GVWR for any Montana floorplan, so none of the three is renamed here and no loaded rating is worked out from them. The trailer’s own federal weight label, inside the door, is the document that carries its UVW, cargo capacity and GVWR.

Tank capacities are 77 gal fresh, 100 gal gray and 50 gal waste, as Keystone lists them. Fresh water weighs about 8.3 lb per US gallon, so a full fresh tank is roughly 639 lb on the road before anything else is loaded. The tire size Keystone lists is 215/75R17.5H; a fifth wheel puts its pin load into the truck bed, so it counts against the truck’s payload rather than its tow rating.

Against the 4 Montana floorplans profiled here, this one is the 2nd by Keystone’s shipping weight, in a range from 15,915 lb (3500RD) to 17,085 lb (3900RK). Every figure in that comparison comes from the same Keystone page type for the same model year, so the comparison inside the series is like for like.

Every number on this page was read on 23 Oct 2026 from Keystone’s own floorplan page for the Montana 3600RO. That page carries no model year, so the year comes from the roster page that links it, which lists the Montana floorplans under the heading “2027 Floorplans”. Keystone notes that its website reflects the most recent production run and that features and specifications change during the year.

How the 3600RO differs from the other sixteen Montana floorplans. Most distinctive first. Each rank counts only the siblings that publish that field, and a figure most of them share is left out. Not every one of these pages covers the same model years as this one (2027); each figure is the one its own page prints, so a rank compares pages, not one model year.

• Carrying capacity (Keystone’s term), 3,045 lb: largest of four; next is the 3500RD (2,830 lb).
• Shipping weight (Keystone’s term), 16,365 lb: second-lightest of four, between the 3500RD (15,915 lb) and the 3800FL (16,750 lb).
• Hitch weight as Keystone lists it, 3,410 lb: second-heaviest of four, between the 3900RK (3,405 lb) and the 3800FL (3,490 lb).
• Hitch weight as a share of shipping weight, 20.8%: largest of four, level with the 3800FL; next is the 3900RK (19.9%).
• Fresh tank, 77 gal: largest of seventeen, level with the 3100RL, 3500RD and two others; next are the 3123RL, 3231CK and ten others (70 gal).
• Grey tank, 100 gal: shared with the 3100RL, 3500RD and 3800FL; of sixteen, ten smaller and two larger, nearest the 3123RL, 3231CK and eight others (88 gal) and the 3915TB (137 gal).
• Length, 40 ft 11 in: shared with the 3857BR; of seventeen, eight shorter and seven longer, nearest the 3623EB (40 ft 2 in) and the 3761FL and 3781RL (41 ft).

Next to the 3500RD, the nearest lighter floorplan by shipping weight, the 3600RO is 450 lb heavier by shipping weight, has 215 lb more carrying capacity, has a hitch weight 665 lb heavier, is 1 ft longer and sleeps two fewer; the two publish the same exterior height, fresh tank and grey tank.

Next to the 3800FL, the nearest heavier floorplan by shipping weight, the 3600RO is 385 lb lighter by shipping weight, has 305 lb more carrying capacity, has a hitch weight 80 lb lighter and is 1 ft 8 in shorter; the two publish the same exterior height, fresh tank, grey tank and sleeping capacity.

Keystone lists 5 Montana floorplans for 2027. 4 have a complete Keystone figure set and no existing page here, and are profiled, from 15,915 lb to 17,085 lb shipping weight; the others are catalogued on this page with the reason against each. Keystone publishes shipping weight, carrying capacity and hitch weight for these trailers, and no GVWR.

Closest sibling: the Montana 3800FL, nearest on the published figures. It differs on 2 of the 5 fields both publish (this plan first): length 40 ft 11 in vs 42 ft 7 in; hitch weight 3,410 lb vs 3,490 lb. They match on sleeps, fresh tank and grey tank.

All 17 Montana floorplans: Montana line hub.

8 of the 18 fields this catalogue tracks are published for the 3600RO. Not published: dry weight, GVWR, cargo capacity (CCC), exterior width, interior height, black tank, slide count, axle count, awning, air conditioning.

Sourcing rules: methodology.