They can be in the thicknesses of 100 sheets, depending on the thicknesses of the 100 sheets they are made for., icf sheet steel is a lightweight material and stronger than the plastic icf block.
There are also different types of icf blocks on Alibaba.com. Small icf sheets are lightweight and can be made in a wide range of sizes, from the large number of icf blocks to the large number of icf blocks in different shapes.