Ceiling cladding/suspended ceiling with a substructure made of drywall metal profiles (usually CD profiles) and an underside planking made of gypsum boards with a smooth surface, which is applied in one or more layers. With substructures made of metal profiles, suspended ceilings are also possible, which, with appropriate design and approval, are fire-resistant as a room-enclosing component, both in the event of fire stress from the underside as well as from above the suspended ceiling.
Source: bauwion
