Stylish Noise Reduction: Floating 45.7 x 45.7 x 5.1' acoustic sound panel minimizes background noise in offices and public areas such as lounges, studios, restaurants, etc This acoustic cloud is especially useful in open, echo-prone areas. Ceiling Mounting: Step-by-step instructions and hardware are provided for both wood joist and concrete/brick ceiling installation. The maximum wire length is 65 (the farther the panel is positioned from the ceiling, the more sound will be absorbed).