This product is excellent for butler type swinging doors. It has smooth and quiet operation. Very durable steel construction. Three complaints though: 1. The instructions are a bit cryptic. Be careful of the dimensional information and pay particular attention to where the dimension lines are referenced to. 2. The large cover panels leave a little to be desired, in that you can only use three of the four screws on each side. Only three screws can bite into wood, since the lower part of the door has been cut away for the hinge. Should have only three screw holes, or false screws that will hold into the cover panel only. 3. The foot/bearing plate that screws to the floor does not have a cover piece. So, the rougher steel and screws are visible.
Overall, a great solution compared to a bi-swing hinge.