dougrainer wrote:
Roller WHEELS or Roller BALLS are for square sharp cornered Screen doors and Entry doors. IF you have a radius top door, then it is not really needed. IF the entry door rubs the fabric, you need to raise the awning to prevent it. Doug
And to add to this, one of the first things I did was to file the sharp corners down a little when I first bought my trailer in 2004. My awning hasn't been damaged yet. By the way, rounding the corners on the bottom of the door is a good idea too. My toddler son can tell you all about that.