While exposed ceilings in office interiors lend a spacious, open feel, this trendy architectural feature has created a new challenge: finding a viable return air path. Plenum ceilings use the area ...

The study attributed the energy performance advantage of suspended ceilings to the use of a return air plenum with low static pressures and fan horsepower vs. ducted air returns with higher static ...

Before we review the specific plenum requirements, it is important to note that any hospital that is accredited by The Joint Commission must comply with the following from the 2011 Hospital ...

During the winter, this setup pulls cold outdoor air in to the house, directly in to the return plenum for the furnace. While a combustion air duct that terminates at the floor will allow cold air ...

Cable ties for securing and supporting cables must be listed for use in a plenum space. Plenum-rated Chapter 7 and Chapter 8 wiring methods are permitted in plenum spaces according to the following: ...

Magnets surrounding the perimeter hold it tight against the plenum to prevent air leakage. It can be easily removed to change out dirty air filters and replaced again. It fulfills the 2009 edition of ...

Ducts or plenums used for environmental air. Other space used for environmental air. As an example of the last type of air-handling space, Sec. 300.22 cites the space above a hung ceiling that is used ...