Electric Leveling System | Goodyear Endurance Tires with 7,000lb axles | 2" Rear Receiver Hitch and 4-Pin Connector (N/A 3990FL and 4002FB) | Two 15,000BTU Air Conditioners with 3rd Air Conditioner Prep | Anti-lock Braking System | Tire Pressure Monitoring System | 60,000BTU On Demand Water Heater | 40,000BTU Furnace | BoonDocker Solar System-200W Panel with controller & battery | Solid Steps with Strut Assist (Where Available) | Heated and Enclosed Holding Tanks (12V pads) | Washer and Dryer Prep (Standard on 3800RK and 3900HBLR) | Underbelly Armor | Soft Close Residential Drawers & Cabinets Throughout | 50" Smart Television / 65" Smart Television 3900HBLR only | 4 Camera Security Prep with Back-Up Cam | Power Fan in Bathrooms and Kitchen | Enclosed, One-Piece Docking Station | Color Matched Fiberglass Exterior | Aerodynamic Two Tone Fiberglass Painted Front Cap with Lights | High Efficiency Radiant Foil (Roof and Floor) | Spare Tire | LatchXtend Door Handle | Ceiling Paddle Fan (where available) |