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 If wiring is needed as well as a new outlet box, the cost can be anywhere from $275 to as much as $650 depending on the complexity of the job. 2  Many major home improvement stores such as Home Depot and Loweâs will run ceiling fan installation specials that can range from $75 to $120 when you purchase a fan through them. Ceiling fan remotes can cost anywhere from $25 to $60. 2  If the junction box attached to the ceiling needs to be reinforced or replaced, this may cost an additional $20 to $40 to replace it.