2027 Keystone Montana3800FL

Keystone publishes three weights for the Montana 3800FL: a shipping weight of 16,750 lb, a carrying capacity of 2,740 lb and a hitch weight of 3,490 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 100 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 3rd 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 3800FL. 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 3800FL 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.

• Hitch weight as Keystone lists it, 3,490 lb: heaviest of four; next is the 3600RO (3,410 lb).
• Shipping weight (Keystone’s term), 16,750 lb: second-heaviest of four, between the 3600RO (16,365 lb) and the 3900RK (17,085 lb).
• Carrying capacity (Keystone’s term), 2,740 lb: second-smallest of four, between the 3900RK (2,320 lb) and the 3500RD (2,830 lb).
• Hitch weight as a share of shipping weight, 20.8%: largest of four, level with the 3600RO; next is the 3900RK (19.9%).
• Length, 42 ft 7 in: shared with the 3941FO; of seventeen, thirteen shorter and two longer, nearest the 3901RK (42 ft 4 in) and the 3915TB (43 ft).
• 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 3600RO; of sixteen, ten smaller and two larger, nearest the 3123RL, 3231CK and eight others (88 gal) and the 3915TB (137 gal).

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

Next to the 3900RK, the nearest heavier floorplan by shipping weight, the 3800FL is 335 lb lighter by shipping weight, has 420 lb more carrying capacity, has a hitch weight 85 lb heavier, is 1 ft 3 in shorter, has a grey tank 50 gal smaller and sleeps two fewer; the two publish the same exterior height and fresh tank.

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 3600RO, nearest on the published figures. It differs on 2 of the 5 fields both publish (this plan first): length 42 ft 7 in vs 40 ft 11 in; hitch weight 3,490 lb vs 3,410 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 3800FL. Not published: dry weight, GVWR, cargo capacity (CCC), exterior width, interior height, black tank, slide count, axle count, awning, air conditioning.

Sourcing rules: methodology.