I need the cabinet supports for G Grass draw slides. Model DYNAPRO 88lb - 21100947 BFBBBF, EG-BF, 21EGBF
The simplest answer is to first locate a kitchen cabinet outlet in your area. Or, even outside your area. You can visit them or call them. If you know who manufactured your cabinet, you could call them. I'd start here first.
try this site https://www.cabinetparts.com/c/drawer-slides
Since you have the model number, why not just "Google" that number? It usually works for me. Good luck!
So, I did as above and googled it (as you could have done!). Here are the results for you to find your model number(s).