The specifications for the standard four-wall handball court

A. Dimensions.
The court is 20 feet wide, 20 feet high and 40 feet long, with back wall recommended minimum height of 14 feet

B. Lines and zones.
Handball courts shall be divided and marked on the floors with 2-inch-wide lines. Recommended colors are white or red. The lines shall be marked as follows:

1. Short line.
The short line is parallel to the front and back walls. Its outside edge is 20 feet from the front wall.

2. Service line.
The service line is parallel to the short line and its outside edge is 5 feet in front of the outside of the short line.

3. Service zone.
The service zone is the area between the outer edges of the short and service lines.

4. Service boxes.
A service box is located at each end of the service zone by lines whose outside measurements are 18 inches from and parallel to each side wall.

5. Receiver's restraining lines.
Five feet back of the outside edge of the short line, lines should be marked on the floor extending 6 inches from the side wall. These lines are parallel to the short line.