module cover
The height of components on the backside is claimed to be within utCA specs. However, there is already one incident where capacitors have been ripped off when inserting the module.
It is suggested to add a module cover, similar to
this
https://schroff.pentair.com/en/schroff/produkte/modulabdeckung-f%C3%BCr-mtca4-front--und-rtm-module-module-cover-for-mtca4-front-and-rtm-modules