I designed a push-in retention clip (single and double version) to ensure that the hangers do not “jump” out of the cleats/adapters and fall.

The single version should work with a single wall cleat, the double version works with “doubled-up” hangers (like the Cleat Remix I created for the “Muscle Rack” heavy duty shelf - here)

They should work with nearly any version of the original cleats/remixes as long as the original cleat and hanger's dimensions are preserved.

Simply print them, and push them into place.