The Hanger Kit is only 5/8" wide but is 15" long and has 6 holes and a "j" hook at the bottom of it to hook on the new extensions. This will enable you to hang heavy pieces on the lower sections of your panels.

You can get an entire kit, one anchor hanger, 2 extensions, and 5 "s" hooks.

If you only hang large heavy pieces towards the top of your panel you can get the anchor hanger alone. Then if you later decide you want extensions they can be purchased separately as well.