Security Chimneys Secure Black 7DLK Double Wall Damper 161in The outer diameter of the

The outer diameter of the collar is 1/8" smaller than the inner diameter of the chimney

These are stainless steel and for indoor or outdoor use

Burner Compatibility - Jumbo See Through Burner & Jumbo See Through Stainless Steel Burner

Up to 4 extension kits can be added to each starter kit

0118GO Grand Oak Individual Log

Security Chimneys Secure Black 7DLK Double Wall Damper 161in The outer diameter of theOverview Since starting operations in 1960, Security Chimneys International has built a reputation as one of the most trusted suppliers of quality chimneys in North America. Our dedication to total quality lives in the research and development of new products and services for the residential and commercial markets. With a 104,800 square foot manufacturing facility in Laval, Quebec, we are fully equipped and accredited to certify that all our products