Very very rarely do I give 5 stars but this product deserves 6 stars. First, the quality is the same as any $200-$300 kit you buy at a hardware store. The rails are straight and strong, powder coated. Bearings are smooth. I've used two of these now and they work great. Installation is simple and straightforward. One thing I noticed in other reviews is that people comment that the door bangs when you roll it. If your door gets hit you'll have the rail spacers back, the thick side going to the wall, not the rail (see photo).
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