Facing lintel brick from Space Brick.
Color: gray with white and beige speckles, "Ganymede".

The manufacturer offers a unique opportunity to create a custom brickwork pattern for any project. An accent color is applied to the base of the lintel, and the ratio of speckles to the base can be chosen by the client.

Size 600x100x45mm.

Even more options for lintel bricks: https://3dsky.org/users/ingusha/models 
Manufacturer's website: https://space-brick.ru/