Knauf acoustic boards are fixed with screws to a metal grid of free-spanning carrying channels made of double profiles types CW or UA with covering strips as well as furring channels made from hat-shaped channels. The carrying channels are anchored only to the flanking walls.
A board layer required for fire protection reasons is laid as a covering on the carrying channels and consists of Knauf Piano fire-resistant board.
An obligatory fire protection acoustically effective insulation layer is arranged between the carrying channels (on the furring channels).
Free Spanning Acoustic