For keystones: CAT6 RJ45 Keystone Jack, V-Max... https://www.amazon.com/dp/B0778YTRJJ?ref=ppx_pop_mob_ap_share

For Blank Keystone covers:

Cable Matters (20-Pack) Blank... https://www.amazon.com/dp/B01AYKR63O?ref=ppx_pop_mob_ap_share

If you look in my threads, I made a post on here showing my rack and I used them with the UI patch panel.