Simply Vertical Slabs

To craft vertical slabs, you'll first need to create the Vertical Slab Crafting Table, a unique block specially designed for vertical slabs.

Here is its crafting recipe :

Once crafted, place this block to start making vertical slabs.

To craft any vertical slab, simply place 3 blocks of the same type vertically in the Vertical Slab Crafting Table like this :

You can also find all vertical slabs directly in the creative inventory to easily explore all available variations :