The ultimate replacement for warped, worn out, or defective factory-built fireplace dampers, and for use in most pre-fab, class A, round terra cotta and stainless steel chimneys. The drop-in liner damper is easy to open and close from inside the firebox. Made of heavy stainless steel construction.

• Replaces missing, rusted or broken dampers
• Installs approx. 6″ below top allowing existing cap to be reused
• Prevents heat and air conditioning loss
• Does not induce additional resistance or turbulence and is not affected by wind
• The drop-in liner dampers can be used on:
  • Class “A” solid pack
  • Pre-fab fireplace
  • Single-wall round
  • Flexible flue liners
  • Air-insulated  and any pipe type chimney in size 6-16 inch round diameter.

Installation is simple, and damper is recessed approximately 6 inches below and inside the top of flue — ideal for restoration projects where an exposed damper is unwanted. The existing or new rain cover can be installed without fear of a freezing or sticking damper.

The top-mounted, drop-in liner damper is all 316-L stainless steel construction and will withstand repeated fires with no problems. It offers a spring-loaded damper that allows unlimited adjustment to open position of the damper.

Installation of drop-in liner dampers is usually about $55.00-75.00 (Raleigh, NC area only). Call Chimney Keepers at 919-772-8110 for more info.

Each damper kit comes with a 32-ft. stainless steel cable, stop spring, bracket, anchors, masonry drill bit, and cable attachment with chain handle.

$11.95 shipping on drop-in liner dampers in the U.S.! Extra shipping cost to Alaska and Hawaii of $6.95.

Other sizes are available. For more information, call (919) 772-8110 or email chimneykeepers@gmail.com with the size you need and your zip code.

**For proper fit, measure the inside of the flue and get a damper that matches that number. The actual damper is smaller by 1/4- 1/2″ so it slides inside the flue.

If you have a 13″ or 15″ flue, adapters are available (special order – nonrefundable). Example: Your flue is 15″. You can order a 14″ damper with an adapter that will allow it to fit inside the 15″ liner. It’s not perfect but will work most of the time. Adapters are $125.00 each. They can be made up to 20″ in diameter.

You can install one yourself with simple hand tools and an electric or battery-operated drill. Complete instructions are in every box.

Note: These dampers are specifically designed for woodburning fireplace flues and should not be used on fireplaces with gas logs.  For regular rectangle or square dampers for masonry chimneys