Is a Metal Ceiling the Same Thing as a Drop Ceiling?
A metal ceiling can stay in the tee or leave it. Lay-in replaces the mineral-fiber tile. Clip-in, baffle, and open cell need a new carrier. 0.6–0.8 mm.
Which Acoustic Ceiling Tile Belongs in a T-Bar Grid?
An acoustic T-bar tile is 0.6–0.8 mm perforated aluminum plus a backing. The NRC is the lab report for that hole and plenum, not the metal alone.
