2" Inside Diameter Port - Fits 1.00" to 1.50" Barrier Thickness

This is a 2" Inside Diameter Port - Fits 1.00" to 1.50" Barrier Thickness. This unit will require a 3 1/8" - 3 1/4" hole for installation. This is a two-piece unit that must thread together from each side of the solid barrier, so you must have access to both sides of the object you are penetrating such as a wall, ceiling, desk, etc.