The dimensions of a facing brick vary depending on the region and the type of brick.
In the UK, the standard size for a contemporary facing brick is 215 x 102.5 x 65 mm. This translates to 8.46 x 4.04 x 2.56 inches in imperial measurements.
In the US, the standard size for a facing brick is 3 5/8 x 2 1/4 x 8 inches. This is also referred to as a "Modular" brick.
Other brick sizes exist, such as Jumbo Modular (3 5/8 x 2 3/4 x 7 5/8 inches) and Thin Brick (with standard face dimensions but a reduced thickness).
Facing bricks are primarily used for aesthetic purposes, adding a decorative touch to buildings, fireplaces, and entryways.