The owners of all residential dwellings in the City of Seven Hills must install house numbers of the size and location as set forth herein. All house number signs must be made out of reflective and contrasting materials. If the house number sign is affixed to a mailbox, said house number shall be at least two inches high and be affixed to both sides of the mailbox. If said house numbers are affixed on a house, which has a setback of not more than seventy-five feet, said house numbers must be at least four inches high. If said house numbers are affixed to a house which has a setback of seventy-five feet or more said house numbers shall be at least six inches high. (Ord. 16-1995. Passed 4-10-95.)