Wall installation hardware for acoustic panels. Include 4 Z-clips. Enough to install 1 panel. These clips will give a secure, fast and durable installation with minimal wall damage. Each kit include 4 Z-CLIPS. Enough to install 1 (2x4) or (2x2) panel. Two clips go on the wall, with the raised sides facing up, and the other two go on the back of the panel with the raised sides facing down. Then you clip the pair of downward facing clips on the panel, to the upward facing clips on the wall for a flush, secure fit.