This 2" ID Wall Eye Wall Port provides a 2" opening through a barrier, such as a wall or ceiling tile, that has a thickness range for between 1/2" - 5/8". Once installed, this unit allows the running of cables, cords, wires, tubes, etc... from one side of the barrier to the other through an aesthetically pleasing, fully tubed opening. We recommend a 3 1/8" opening for the installation of this product.