Except as otherwise specified in this section, the outer openings of a food processing operation shall be protected against the entry of insects, rodents or other vermin by:
Section 1813.1 shall not apply if a food processing operation opens into a larger structure, such as a mall, airport, or office building, or into an attached structure, such as a porch, and the outer openings from the larger or attached structure are protected against the entry of insects and rodents.
Exterior doors used as exits need not be self-closing if they are:
Except as specified sections 1813.2 and 1813.5, if the windows or doors of a food processing operation are kept open for ventilation or other purposes, the openings shall be protected against the entry of insects and rodents by:
Section 1813.4 does not apply if flying insects and other pests are absent due to the location of the food processing operation, the weather, or other limiting conditions.
D.C. Mun. Regs. tit. 25, r. 25-B1813