The basket ring has a net attached below to briefly check the ball's downward progress and indicate a score. The ring is fastened to a rectangular backboard 6 feet (1.8 m) wide by 3.5 feet (1.1 m) tall,[12][13] though in lower levels of play or recreational use the backboard may be smaller and/or fan-shaped. The entire structure is supported from behind and anchored to the floor beyond the end line at higher levels of play; the structure may be anchored to a wall or ceiling at lower levels of play.[13] The ring, net, and the front, top, bottom, and sides of the backboard are all considered inbounds, while the back of the backboard and the support structure – even those parts suspended over inbounds areas of the court – are considered out of bounds.[citation needed]