Good quality product but the installation instruction is so difficult for any first time installer.  There are no high measurement where to drill the hole to hang the roller bar.  I measured the distance from the bottom of the shower door to the top hole of the shower door and add a 1/4 inch to drill the hole and hang the roller bar by itself first.  This make it so easy to install the rest of the door so easy.  The measurement from the bottom of the door to the hole is 73" add 1/4" that would be 73 1/4" from the floor. Hang the roller bar first then hang the fix panel door later and make sure the fix panel is installed on the outside of the shower.