Will do - I have a wire mesh guard for the heat bulb.

I think the extreme heat gradient is due to the room being pretty cold - about 59F. The viv is in a small walk-in wardrode and I like my bedroom cold. I guess the ideal solution would be to put an oil-filled radiator in the wardrobe, but my preference is to leave the wardrobe door open. And, the room temp issue will resolve itself soon enough when the season changes.