This 5/8"" ID Wall Eye Wall Port fits a wall thickness of between 5 .625" - 7 1/4" in thickness, providing a fully tubed port through your wall or barrier. With flanges on both sides of the wall, this port is aesthetically pleasing and leaves a finished look where the hole was initially placed. This is a 3D Printed part, allowing customization, lower cost and solid functionality. This unit will require a 1 1/8" hole for install.