this unit price includes finance incentives. some restrictions apply. oac. see dealer for details. 2023 heartland gravity 3640 dimensions gvwr 16 473 lbs dry weight 12 029 lbs hitch weight 2 473 lbs cargo capacity 4 396 lbs w x h x l 8 ft 5 in x 13 ft 3 in x 40 ft 10 in sqft 368 ft sleep capacity 7-8 axles 2 x 7 000 lbs fresh tank 100 gal grey tank 85 gal black tank 45 gal water heater 6 gal furnace 35 000 btu air conditioner 13 500 btu lp tank capacity 2 x 30 lbs refrigerator 8 cu ft /110 /lp converter 75 amp shore power 50 amp number of slides 2