Equipment building, cabinet, or locker size limit. Any equipment that is necessary in association with a wireless telecommunications antenna shall be housed in a building, cabinet, or locker. If an existing building is not available or viable to house the equipment, a cabinet or locker of no more than 1,000 cubic feet in size may be placed on the site consistent with Subsection
B above, subject to the setback limitations of the zone in which the property is situated. Equipment cabinets or lockers not enclosed within a building shall not exceed 12 feet in height. A new building constructed to house the equipment shall comply with the setback limitations and other bulk requirements governing accessory structures of the zone in which the property is situated.