Back bracket

Thanks for posting. It looks like this bracket is meant to accommodate an L-shape end to a track slide, is that correct? Unfortunately, we don't carry hardware for this type of track system. Instead, I recommend you consider replacing your existing track slides with the 32-056 or one of the other-sized variants I have listed on this page. These tracks can be mounted to the back of the cabinet with drawer sockets like the 32-018. Take a look and see what you think.