See the images; can anyone with some certainty assess if this is firebrick?
According to an old source (which can no longer be verified), this is supposed to be firebrick.
It is old, has been stored for at least 30 years, but never used.
There are no stamps or markings on it, as far as we can see.
When I reverse search similar appearance, I get results for red bricks with similar hole pattern.
These are called "chimney bricks" and are not fireproof, but withstand higher temperatures.
This brick is yellow, the same color as the firebrick available today.
However, the yellow firebrick available today is solid without holes.
Could there have been "real" firebrick with this hole pattern in the past?
According to an old source (which can no longer be verified), this is supposed to be firebrick.
It is old, has been stored for at least 30 years, but never used.
There are no stamps or markings on it, as far as we can see.
When I reverse search similar appearance, I get results for red bricks with similar hole pattern.
These are called "chimney bricks" and are not fireproof, but withstand higher temperatures.
This brick is yellow, the same color as the firebrick available today.
However, the yellow firebrick available today is solid without holes.
Could there have been "real" firebrick with this hole pattern in the past?
