What is the size of a standard brick?

According to the Brick Industry Association, the most common brick sizes range from 31/2" x 21/4" x 7 5/8" to 3 5/8 x 3 5/8  x 11 5/8" as measured by Depth x Height x Length. Manufacturers produce bricks to their own specifications but generally fall within these commonly produced sizes. These measurements are the actual size, but bricks are also measured by their "nominal" size that includes the width of the mortar joint. The nominal sizes of most bricks fit into a grid that coincides with most other building features such as door frames, windows and wood components.