Dante Products Combo Pack with Angled 1/2-inch Globe Valve, Polished Brass Floor Plate and 3-inch Key Dante Combo Pack with Angled Globe Valve, 3-Inch Polished Brass Floor Plate & Key Material (Key & Floor Plate)-Zinc Die Cast; Brass Plated; Hand Polished Cleanliness-Heats chimney quickly causing fireplace to draw smoke immediately up the chimney, never into the room Convenience-NEW Design Installs in minutes and is easy to use Savings-features an energy conserving air/gas mixing chamber for efficient operation