Side Yards for Residential Districts. There shall be two side yards, each with a width prescribed in the Schedule of Area, Yard and Building Requirements, incorporated in the "Zoning Map of the Borough of Allentown, Monmouth County, New Jersey", except that lots existing at the time of the enactment of this chapter having a width less the minimum required in the applicable zone shall have side yards defined as follows:
1.
For each foot less than the required lot width in the applicable zone, the applicant may reduce the total width of the two side yards by six inches, up to a total of six feet.
2.
The reduced total width shall then be apportioned between the two side yards, except that the width of the narrowest side yard shall not be less than 1/3 the total width of the two side yards or a width of six feet, whichever is greater.