Marquee, awning, or canopy signs affixed flat to the surface of a marquee, awning, or canopy are permitted, provided that the sign face does not exceed a height of two feet, shall not exceed 1.5 square feet of area for every one linear foot of building unit frontage, and shall not extend vertically or horizontally beyond the limits of said marquee, awning, or canopy. In addition, a marquee, awning, or canopy shall not be less than eight feet above a sidewalk. A name sign not exceeding two square feet per face located immediately in front of the entrance to an establishment may be suspended from a marquee, awning, or canopy, provided that the name sign shall be at least eight feet above a walkway.