Bluewind Vermiculite Brick for Furnace Insulation is designed to be used for furnaces that are subject to heavy operational stress. The bricks are made out of expanded Silver vermiculite which is well-known for deposition of lightweight on the final product and saving limitations. The pore structure is designed to achieve insulation effectiveness so that the bricks can be used within the furnace as a transition refractory lining or as a backup for other furnaces. Our vermiculite bricks increase economic value and enhance the efficiency of your furnace systems.