84-078 on bottom and not on top?

A handy person from swanzey,n.h. says:
My patio screen door has #84-078 rollers on the bottom and none on top.Is this possibly correct for older Anderson units?
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Mike from SWISCO responded:
Good Morning,

We were actually asked a similar question a couple years ago. It turned out that the screen door was installed upside down. The 84-078 roller should only be found on the top of the screen and there should be bottom rollers. Take a closer look at your screen door. Is the screen door upside down? Are the bottom rollers missing?
A home owner from Iowa says:
Mine was upside down as well and had been that way I assume since it was built 20 years ago. Fixed it after reading this thread. Thanks!
A home owner from Oregon says:
I went ahead and switched the handle to the other side and flipped the door, and it doesn't squeak like it did before. Definitely an improvement. Thanks!
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Tom from SWISCO responded:
Awesome! Glad our advice was able to help you. This is such a bizarre problem but at least it's easy to straighten out.
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