California Code
ARTICLE 1 - Food Processing Establishments
Section 111990.

111990. Where practicable, the doors, windows, and other openings of every food producing or distributing establishment shall be fitted with stationary or self-closing screen doors and wire window screens, of not coarser than 14 mesh wire gauze.

(Added by Stats. 1995, Ch. 415, Sec. 6. Effective January 1, 1996.)