1 From the distance from the center of the earth to the peak of the mountain.  As mountains are generally measured from sea level, Mount Everest 29,035 ft (8,850m) is considered to be king. However, there is a difference between the highest and tallest.
You can buy acoustic ceiling tiles in either 2'x2' or 2'x4' sizes. It will cost about $1,000-$1,700 to install an acoustic ceiling system in an average 12'x14' room. Most contractors will charge between $2 and $5 per square foot for labor. A modest set of 12, 2x2 tiles can cost from $25-$40. There are more extravagant tiles which can cost as much as $100 for a set of 12.
1 Because all jobs are going to be 100% unique, it is best to get three exact quotes for your project at comparison services such as HomeAdvisor.com. 2  For example, at Elegant Tray Ceiling System in Harbor Beach, Michigan, Traditional Tray Ceiling installation costs approximately $1,500 to $3,000. According to builder Stantonhomes.com, tray ceilings as an upgrade generally costs around $1,000 for a very simple cut-out tray with no crown molding and no paint variation added.