I moved into an apartment that has a wall-mounted heater that gets rather hot when turned on (see below). I have an inquisitive 1-year-old who already likes to climb up on the unit (luckily not while it's been on). I am wary about putting something directly surrounding the unit, both because it would block the heat and because it might be a fire-hazard.
Does anyone have suggestions on how to properly protect the unit from my child (and vice-versa!) without creating further issues? I cannot remove the unit or do major construction, as this is a rented apartment.