Non-combustible fireplace mantel beam shelves. Made from a lightweight, heat-resistant, sustainable, eco-friendly reinforced mineral composite material with metal top and bottoms. Making them perfect as a fireproof mantle shelf above a wood burner, inset stove, open fires, mantelpiece stoves, kitchen chimney hoods, and more. They will remain strong and stable with fluctuating heat, even when placed very close to the heat source.