Smoke & Carbon monoxide detectorsTinted safety glass windowsStandard Exterior2-5/16" hitch coupler (select models)14" radial tires110V GFCI protected receptaclesABS fender skirtsEZ lube axlesBaggage doors, lockable, insulated and radius-cornered w/heavy-duty grab handlesAerodynamic front profileHeavy-duty, retractable entrance stepHDPE wheel wells