Upper door frame of Andersen door
A quick learner from Troy, ny says:
May 23, 2016
My andersen sliding door on the bottom has a single raised "rail" for the rollers to slot over. But the upper doesn't. It looks like the upper rollers should roll in a groove. What is the deal?
Paul from SWISCO responded:
May 25, 2016
Andersen just has a plain u-channel at the top for the door to slip into. The roller just rides in the channel to give the door tension so it won't jump the track.