§ 12-146. Vents for light or air.

All vents or openings for light or ventilation in the side walls, foundations or roofs of business buildings which may be accessible to rodents, from the ground or other surface or by climbing, are required to be rodent-proofed by the installation of iron or steel grills having no openings large enough to insert through them a cylinder over one-half (1/2) inch in diameter, or by securely fastening into place expanded metal of eighteen (18) gauge or heavier, or wire cloth of nineteen (19) gauge or heavier having a mesh of one-half (1/2) inch or smaller. The metal may be sealed in place with cement, or mortar or it may be installed on a tightly fitting wooden or metal frame. If a wood frame is used the edges of the wire cloth should be covered by strips of scrap metal approximately one (1) inch wide.

(Ord. and Res. 1963, Sec. 9-12; CB-127-1987)