Bau Exhibition GKD Posted by Frank on March 6, 2012 Posted in: Uncategorized. This is the 2nd almost live post from the “Bau” Design show in Munich Germany. GKD revealed their new Ceiling system with an NRC rating of up 0.65.The Ceiling panels can be installed using a standard Grit. Posts navigation ← Bau Exhibition Prodema KAUST-NBK →