This large Wall Eye Wall Port is made with a 3" ID opening, with an oversized 1" flange that protrudes around the exterior of the wall Eye. This large flange has 3 of the 1/4" through holes to allow the port to be attached to the wall after the unit has been screwed together. This extended length unit can accommodate a wall or barrier thickness of between 8" and 14" in thickness. (Shown beside standard wall port to help give size relevance).
