It is very critical that the bottom track for a shower door or bath door installation is set on a level surface. Additionally, there must be no imperfections in the bottom track. While Kohler and Sterling inspects each batch of tracks for defects, we recommend you inspect the product prior to installation to ensure there are no other imperfections.
If the bottom track does not sit level, the door will not install, open or close properly. More importantly, any water caught on the track will not gravitate back onto the receptor or drain.