2022 Host Mammoth 11.6 with every optional upgrade possible. Always stored indoors except when in use. Extreme Off Grid package with larger inverter, lithium batteries, 3 solar panels, with wiring for a fourth. On demand water heater, microwave/convection oven combo, after market stabilizer bar system. See the spec sheet for all upgrades. If you’re looking for the most spacious king of the campers, this has everything you need.