The furnace for Harvia 36 sauna from Harvia.
https://www.harvia.fi/en/product/36/# 
The file contains:
– The furnace for Harvia 36 sauna. (510x510x810mm.)
– Accessories for the care of the stove (brush for cleaning scoop for removal of the ashes tongs for firewood hook).
In the Vray version below 3.6 check the settings in the BRDF section.
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Sauna stove Harvia 36 (WK 360) from Harvia.
https://www.harvia.fi/en/product/36/# 
The file contains:
– Sauna stove Harvia 36. (510x510x810mm.)
– Accessories for the care of the stove (brush for cleaning scoop for the removal of hooks).
In Vray above 3.6 version check out BRDF material options.