When it comes to the plenum area, “out of sight” must never become “out of mind.” Whether located under an elevated floor, such as in a data center, or above the dropdown ceiling of a conference room, ...

Though suspended ceilings (above, right) remain the most popular ceiling system option, facility managers report that 17% of their total building square footage still features an open plenum ...

About the author: Seong-Hyon Lee is a senior fellow at the George H. W. Bush Foundation for U.S.-China Relations and a visiting scholar at the Harvard University Asia Center. The world’s ...