Check the listing for details. Cast Iron Stove Pipe Damper - Multiple Sizes Available. Color: Black, Condition: New. Listed at 24.99 USD. Free shipping to all of the lower 48 US states Cast Iron Stove Pipe Damper- Easy Installation! Cast Iron Stove Pipe Damper The Cast Iron Stove Pipe Damper is adjustable to help control the burn rate for your wood stove. It is used in the center of a Single Wall Stove Pipe. By turning the spring loaded steel shaft up or down you can increase or reduce the airflow and draft. Installation is easy, just drill two ¼” holes and screw into the single wall pipe. Available in 6 in, 7 in. or 8 in. For use with the center of Single Wall Stove Pipes Adjustable to control burn rate Includes a spring loaded removable steel shaft Easy Installation Available in 6 in. 7 in. or 8 in. We carry a full line of chimney supplies. If we don't have it, our Custom Shop will build it within 48 hrs. We also have chimney liners in 3", 4", 5", 5.5", 6", 6.5", 7", 7.5", 8", 9", 10", 12", 14", and 16". Be sure to check out our other items, and add us to your favorites list. Contact Us: If you have questions, please feel free to call us or send us an eBay message.