Title 30
SECTION 57.8531
57.8531 Construction and maintenance of ventilation doors.
§ 57.8531 Construction and maintenance of ventilation doors.Ventilation doors shall be -
(a) Substantially constructed;
(b) Covered with fire-retardant material, if constructed of wood;
(c) Maintained in good condition;
(d) Self-closing, if manually operated; and
(e) Equipped with audible or visual warning devices, if mechanically operated.