// CODE SNIPPET
606.0 Ventilating Ceilings
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Perforated ceilings shall be permitted to be used for air supply within the limitations of this section. Exit corridors, where required to be of fire-resistive construction by the building code, shall not have ventilating ceilings.
Ventilating ceilings shall comply with the following:
- Suspended ventilating ceiling material shall have a Class 1 flame spread classification on both sides, determined in accordance with the building code. Suspended ventilating ceiling supports shall be of noncombustible materials.
- Lighting fixtures recessed into ventilating ceilings shall be of a type approved for that purpose.
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