Incredibly sturdy and appears to be well made. One thing I recommend is putting in the metal separator pieces before attaching unit to the tracks. You can complete 90% of the install but slide out the unit while putting in the dividers. If you try to install while locked in the pull-out position, the weight needed to push the brackets into the hole might bust the tracks out of the cabinet (it happened to us). Other than that we are very happy with purchase!