It's much better than that grill that made every one so sleepy they went to bed on the floor.
Then fix it like this! I'm very compressed with your ingenuity.
New heater was mounted on the wall, just close enough to the flush to stop the handle going down.
Finally, a solution to the problem of undercarriage frost.
floor heater vent
But still worse than pretty much any other option. ~Not-So-Handy Andy