Big. That's my first impression. My second impression? Not so big. No, I'm not skitzo, it's just that the duct gives the illusion of fairly hefty girth. Take the duct off, and everything looks normal. Well, normal being size-wise at least. You may point out that this isn't Zalman's typical "flower design", and it some aspects you would be right, but it is merely a change in its arrangement...Every time I see Zalman's finish on the bottom of their fin products, I gaze in awe. With that many individual fins, there should be some of roughness and imperfection, but I continue to see none.