Doors need new hardware not moving properly

Thanks for reaching out to us. We have a few parts that may be worth considering for your bi-fold door. I've made a list for you on this page. These look very similar to the hardware I see in your photos, but bifold door parts can be tricky; these doors are fairly old and many parts aren't in production anymore. Thankfully, we have dimensions for each product that you can use as a reference. That will let you verify if these will fit.