// CODE SNIPPET
1203.4.5 Height of Openings
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The top of at least one opening providing required natural ventilation to a habitable room or space shall be a minimum of 7 feet (2134 mm) above the floor of the room or space served by the window or opening.
Exception: Mezzanines. Where the required natural ventilation for a habitable mezzanine level is provided by a window(s) on the lower level in accordance with Section 122.214.171.124.2 (Exception 4), and where compliance with Section 1203.4.5 is not feasible on the mezzanine floor, Section 1203.4.5 shall not apply to such mezzanine floor provided that either:
- Such window(s) is on the opposite wall from the mezzanine, and the top of such window is at least 12 inches (305 mm) above the floor of the mezzanine; or
- Mechanical ventilation is provided to the mezzanine level in accordance with the New York City Mechanical Code capable of providing 2 cubic feet per minute (0.00094 m3/s) of fresh air per square foot (0.09 m2) of floor area of mezzanine.
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