Patio door
The manufacturer brand of the door does not help determine which roller can be used in place of your existing one. We will need to see photos of the roller completely removed from the door and have you provide detailed measurements. From there, we can search through our data base to determine which replacement options are available. Unfortunately, there is no other way we can identify your rollers.
Thanks for replying back with your photos and information. In your first inquiry, I noticed you referenced our 81-018 tandem roller assembly. I would have to agree in that replacement option as well. Look over our measurements to confirm this is a match for you.