I made it, it's home-made. I never liked the Jeep factory hardtops, so I designed this one with the features and styling I thought a proper Jeep hardtop should have, made molds, and molded it in fiberglass in my home garage. It's modular, so the side panels are removable; there are both hard sides and soft sides. It's also got a full rear "barn door" for easy access to the cargo area, and it's designed to carry heavy weights on the roof rack, like a roof-top tent.
After I finished building it, Gr8Tops licensed the design from me (
www.gr8tops.com), and they now sell versions of it for the TJ and LJ, although their version doesn't include many of the features I built into mine, like the swappable hard/soft sides.