CD Channels are attached to the ceiling slab with hooked wires and rapid hangers. CD channels are attached to each other with Knauf Universal Flush connectors in the Knauf D113 System. Knauf UD channels are installed flush on the existing bearing system of the building with anchoring screws(Screw Pin Fastener). This facilitates the proper alignments and installation of all base and bearing studs and channels. Knauf Gypsum Boards are installed on metal grid with screw attachment, starting at one end and gradually advancing towards the other. Knauf Joint Tape, included here in the product group of Knauf Accessories, is applied on Knauf board joints that are then filled in with Knauf FugaGipsJointing Compound