Courts are usually constructed with masonry walls, finished with a smooth render and painted white with red 'out' and 'service' lines. Many modern courts have been constructed with a glass back wall, and professional matches are often played on an 'all-glass' court, to allow for viewing by up to 2000 spectators. Recently, some clubs have constructed 'rainbow courts' often with green or blue walls, much to the traditionalists' disapproval.
The floor is usually a light-coloured timber strip flooring, laid longitudinally and sprung, with red line markings for the service boxes and service areas. The ceiling should be light-coloured and high enough to permit the ball to be 'lobbed' (hit in a high arc to the back of the court).
In the more popular and widespread 'International' (originally English) version of the game, the court is 9.75 m (32 feet) long by 6.4 m (21 feet) wide. The 'American' version of the game uses a harder ball and a court 18 feet (5.49 m) wide.
The 'International' court has a panel at the base of the front wall called the 'tin', surmounted by a 50 mm (2 inches) high 'board', in total 480 mm (19 inches) high. 'Out' lines 2.13 m (7 feet) high at the back wall and 4.57 m (15 feet) at the front wall, are joined by a raking 'out' line on each side wall.
