Heat Shields

Heat Shields
Originally uploaded by Prairie Rose House
This is one of the heat deflectors that came with the house. The words read:
pat 7-6-15
Hall Hdw Co
The sides are pretty sturdy, maybe iron but the deflector is light weight, perhaps aluminum? I think the bulges on the side are to hold waterso that evaporation would help keep the humidity up.

Does anybody have a similar device or seen one for sale?