Paul from SWISCO responded:
March 22, 2016
The double hooks on 81-022 wheel housing attach to a cutout under the bottom door rail. After you remove the door, unscrew the two bottom frame screws, then use a block of wood and hammer to knock off the bottom door rail. That will allow you access to the rollers. Just be careful when knocking off the bottom rail that you don't break the glass.
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Paul from SWISCO responded:
March 22, 2016
I'm afraid there's no way we can identify what you have based on this image. In order to confirm that the 81-022 is correct, you will have to remove your door. I am sorry that there is not an easier way. That's just how this hardware was designed. The manufacturers certainly don't want to make it easy.
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