US Stove DR6 Barometric Draft Regulator, 6-Inch US Stove's DR6 Barometric Draft Regulator maintains consistent draft for US Stove furnaces. A constant draft allows for proper operation and efficient fuel consumption of wood and/or coal-fired furnaces, providing more complete combustion, efficient utilization of fuels, and saved money. This Barometric Draft Regulator counteracts the negative forces caused by changes in temperature, barometric pressure, and the effects of wind, in order to maintain a consistent draft. US Stove has been bringing warmth to homes across the nation for 140-year. US Stove has a wide range of Automatic Circulators, Plate Steel Heaters, Cast Iron Heaters, Pellet/Multi-Fuel Heaters and Gas Fireplaces from which to choose. The large selection of stoves and accessories will ensure warmth of your home with safe, quality products. Features Automatically regulates draft for a cleaner, more efficient burn Fits any standard 6 in. black or galvanized stove pipe Easy installation Provides more efficient fuel consumption This simple, low-maintenance device is a great addition for all US Stove Furnaces USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.