For chest users, one of the most important functions is the size of the chests they build. I had to dig through the code to see the size of the chest - counting would be harder. Please update either the curseforge page or create a small wiki page (or allow me to do that) do document the chest sizes.

The formula is:

• Number_of_item_Slots = number of rows * 9
• Number_of_Rows = Math.ceil((Math.pow(getSizeSingular(), 3) * 27) * getMaterial().getInventoryMultiplier() / 9);
• = Math.ceil(Math.pow(getSizeSingular(), 3) * 3 * Material_Factor)

(Does the vector you access using getSizeSingular() provide a cubic zize? Not important though.)

Material_Factor:

• Wood: 1
• Copper: 1.666
• Iron: 2
• Silver: 2.666
• Gold: 3
• Diamond: 4
• Obsidian: 4

You're right, I should've added this to the curseforge description a long time ago.

Done! :-)