That trim is held in place by about 10 or so skinny finish nails. In addition to denting the vertical trim you could rip that top horizontal right off the wall and get hurt. Don't use these! Also the one that installs inside the doorway isn't good either. The door casing is only 3/4" wood and has a 1/2" or so space behind it, nailed through flimsy shims as you can see in the pic. You can see how the installation bowed the top of the casing on the left side. You don't want that. Plus, you could crack the casing. If you HAD to use that bar, you would need to remove the finish trim and insert solid wood in that space where the brackets will be mounted. You might have to knock out any flimsy shims that might already be in that spot, then insert enough solid wood to fill the gap in the spot where you will be screwing the brackets in. (It wouldn't necessarly have to be a single thickness of wood. The idea is to fill that gap in that spot with something more substantial than the cheap, brittle shims typically used to install doors.) Then, install the brackets with screws long enough to go all the way through the door casing and the new solid wood shim, then at least an inch into the 2x4 wall framing. Then , of course, replace the trim you removed and touch up the paint if you need to. This is not major construction 🙂 a handy person could do it no problem. It would be much safer that way and less likely to damage your door trim.

A lot them sold out or brands changed sadly. I try to only link to products I’ve used and still trust