In the zoning districts where mobilehomes are permitted, mobilehome units shall comply with the following standards and requirements:

    A.    Minimum Areas. Mobilehome units shall have a minimum floor area, exclusive of kitchen, bath and closet areas, of one hundred forty (140) square feet when occupied by not more than two persons, nor less than two hundred forty (240) square feet when occupied by three persons, with an additional seventy (70) square feet per person when occupied by more than three persons. No individual room exclusive of kitchen, bath or utility room, shall have an area less than seventy (70) square feet nor be less than seven feet six inches in minimum dimension.

    B.    Light and Ventilation. Rooms or enclosed spaces, exclusive of kitchens or bathrooms, shall be provided with windows or exterior doors for natural light and ventilation. The aggregate glass area shall be not less than one-tenth of the floor area served, with not less than one-half of this area available for unobstructed ventilation; or the equivalent in mechanical ventilation shall be provided.

    Kitchens and bathrooms shall be provided with windows not less than three square feet in area with not less than one-half of this area available for unobstructed ventilation; or the equivalent in artificial light and mechanical ventilation. When not provided with natural ventilation of the required area, kitchens shall be provided with an exhaust fan. Mechanical ventilation for kitchens and bathrooms shall provide a minimum air change of one hundred (100) cubic feet per minute; and in other spaces, when used, shall provide a minimum of not less than two air changes per hour in the space served.

    C.    Exit Requirements. Mobilehome units shall have not less than two doors, or one door and one unobstructed emergency exitway. One door shall be located near the front of the unit and one near the rear. An emergency exit-way may be substituted for the rear door when the length of the unit does not permit use of two doors. Locking mechanism for doors shall be of the safety type permitting opening of the door from the inside by the operation of a single knob or lever. When sleeping rooms of a mobilehome unit are arranged so that they have access to only one door of the unit without passing through a passageway that might be blocked by fire, the room shall be provided with at least one outside window which can be opened from the inside without the use of tools and of such design that it may serve as an emergency exit-way if the normal avenues of escape are blocked.

    D.    Mechanical Requirements. Plumbing, heating, electrical and air conditioning installations shall comply with the standards, if any, prescribed by the state of Illinois.

    E.    Compliance with Standards. Mobilehome units shall comply in every other instance not set forth above with the standards, if any, prescribed by the state of Illinois.

    Units not complying with these standards and requirements shall be classified as "travel trailers" and shall be prohibited in a mobilehome park as defined in this chapter. (Prior code § 23-2-4)