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 ...

All questions and answers are based on the 2011 NEC. Q. What wiring methods are allowed by the Code in spaces above a lay-in ceiling? A. Section 300.22(C) applies to spaces used for air-handling ...

A UL-approved fiberglass plenum box with ceiling radiation damper (CRD) is available in three model styles. The fiberglass plenum boxes are offered in 1- and 1-1/2-inches-thick rigid ductboard with ...

If your latest renovation project includes a new ceiling, don't panic at the thought of overhead drywall work. In the right situation, a suspended ceiling offers some real advantages over the ...

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, ...