Basketball is an intricate game that has been through a wide range of changes over the years. And as players become bigger and more powerful, some of the equipment changes too. For instance, break-away rims and stronger backboards help to protect equipment and players. For the most part, basketball backboard regulations are relatively the same across levels of competition, from high school through the pros.
Dimensions and Measurements
An official backboard for all levels of basketball from high school to professional to international standards measures 3.5-feet tall by 6-feet wide. With a rim attached, the front of the rim must be 24 inches from the backboard, and the back of the rim must be 6 inches from the backboard. The backboard must be at a 90-degree angle to the rim. There is no regulation for the distance between the floor and the bottom of the backboard but most are about 9 feet 3 inches off the floor.
Materials
Most basketball backboards are made of tempered glass. Tempered glass is the most durable and the most transparent. National Basketball Association backboards must be transparent in order to allow spectators to easily see through them. Most NCAA backboards are also transparent. The NBA also must use pressure release--or break-away--rims that take pressure off of the backboard. Sometimes, though, a hard slam-dunk can still break a backboard. Tempered glass, which is similar to the glass used in car windshields, typically will not shatter when it breaks, which helps keep basketball players safer.
Markings
Every backboard has a rectangle painted on it just above the rim. The NBA rulebook states that the 2 inch rectangle should be centered behind the rim, and should measure 24 inches long by 18 inches tall. This rectangle is typically used as a target for players to bank shots--or to use the backboard to redirect the ball into the hoop. These dimensions are typical across most levels of play, including high school through professional.
Lighting
In the NBA and NCAA, the shot clocks and game clocks are located just above the backboard and also behind the backboard, which is another reason why the backboards are transparent. It allows the players to easily see the clocks. In the NBA, backboards must have attached to them one red light on each side that illuminates when the shot clock or game clock expires. This helps referees to better determine whether a shot beat the buzzer.
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