Description Made of cast iron, John Wright Lattice Steamers feature a durable porcelain finish inside and out to resist rusting and chipping. Used for humidifying, steamers bring a pleasant fragrance to a room when filled with potpourri. Unique in design and of the highest quality, our steamers are functional as well as decorative stove accessories. Matching Jet Black Lattice Trivet, #33-348 is recommended.