Rockfon® Cubegrid® Open Plenum 15/16" Ceiling System uses standard grid suspension that has been specifically manufactured with all extra holes and slots removed allowing for a high-quality architectural finish on all sides. This easy to install open ceiling system can be used to mask the plenum or highlight a specific space. Integral cross tee couplings, combined with no visible hanger slots and holes makes CubeGrid® the cleanest open cell ceiling suspension available.