Hello,
We can't be sure without seeing detailed photos of each part that you need uninstalled, as well as the tracks. With that being said, it looks like your door may use corner connectors similar to the 23-409 shown below. If so, you can start by reviewing the parts related on this page that are commonly used with this corner. We can't be sure if these are the parts you have but review the specifications shown on our product pages compared to your original hardware. Thank you!
Your photos resemble the 23-409 but you'll need to review the dimensions shown on each of our product pages to confirm if they match your original hardware.
As we mentioned, we can't confirm the correct replacement without seeing detailed photos of the original hardware. The pins normally used with this corner are compatible with the 21-452 metal bifold door track, but I can't confirm if this is what you need without seeing the original track. Also, please note that these tracks are only available in white.
The 21-452 can be used on the top and bottom but, as we mentioned, it is only available in white. We apologize for the inconvenience.
