How do you make a block not visible in the inventory?

So, i made a block that i set the max to 127, 127, 127 and i don't know why,

But i want the block to not be visible in the inventory.

Since the block is very big, it obviously hides some blocks.

So, how do i do it? Does it use a plugin? Or do i have to set something in the settings of MCGalaxy?

Here's what it looked like:

/lb edit [id] order 0

 

Thanks.