I had these doors installed by a professional, and he indicated that there were no major "hang-ups" with the install of these sliding doors. All the weight of these doors is from the top piece, which is supported by the two upright aluminum supports to the right and left The doors do not touch the bottom "track" which makes them extremely easy to push/pull. One thing that caused me a bit of a concern, and the installer agreed with me, is that there is some "give" should one step on the bottom track, as it is open beneath this track, I suggested the installer put a few (two) shims into this cavity which is under the track, and it supported well this "give" which had existed before the shim install. It didn't raise the track at all, otherwise the door may come into contact with this bottom track when opened and closed, but it did provide support that the aluminum no longer sags if stepped on.
Easy to Use, Easy to Install, Looks Great, Good Size & Weight, Nice Design, semi high quality