Things that are made of Glass can be used as Clearvue Glass. But...

Things that are made of Glass can be used as Clearvue Glass.

But Bricks cant be used as Clearvue Glass unless they order Glass Bricks.

Concrete cant be used as Clearvue Glass, because Clearvue Glass is made of Glass. So you would only be able to use Clearvue Glass on things that are made of Glass, like the GLASS outside of a Highrise.

But a 747 Jumbo jet isnt made of Glass, so you cant order a Glass 747 Jumbo jet because they arnt made of Glass.

But things that are Glass can be ordered as Clearvue Glass, because Glass is made out of Glass.

I hope this helps you comprehend that Glass is made of Glass, so Clearvue Glass can be used for things that are made of Glass.