I really like this door, but I had to modify the design to prevent water from splashing out the bottom.  Their design has the threshold parallel to the rolling door about 2 inches away.  The clearance at the bottom of the door is about 1/2 inch, so water would splash under the door and over the threshold.  I ended up moving the threshold to about 1/8 inch away from the door, instead of 2 inches.  No more splashing outside the shower.