# Sec. 4-231. Mechanical Ventilation; Section 403

Codified through Bill No. CB-018-2026, adopted May 12, 2026, effective July 24, 2026. Source: Municode, Supplement 2026 Update 2. Editorial notes and legislative history omitted.

## Sec. 4-231. Mechanical Ventilation; Section 403

Prince George's County, Md., Code § 4-231 (2026)

(a) NFPA 90A 6.2 - A single point master shutoff switch shall be provided for the fire department which is capable of shutting down all air handling equipment to prevent the spread of smoke through the building. The switch shall be located at the entrance, inside lobby, near fire alarm annunciator or in fire control room where one present.