Security Chimneys International

Security Chimneys International (SCI) has over 50 years of experience at innovating durable, safe, and highly efficient stainless steel/aluminum chimney systems and is one of the most reputable chimney supply companies in North America.
SCI industrial-strength chimneys are sturdily built, precisely fitted, highly corrosion resistant, optimally efficient, and specifically designed for the Categories I through IV boilers/heaters commonly used in schools, hospitals, and factories.
Top-selling SCI Products
Security Chimneys International manufactures a wide range of quality products, but we will highlight just 5 of their most commonly sold items below:
CIX Secure Stack Positive Pressure Chimney
This versatile stainless steel chimney is double-lined with a 304/316-gauge inner liner, a patented self-centering flue, and a single-locking coupling. The CIX is a great commercial chimney and can even be used for grease duct and diesel exhaust applications.
CT Liner and Breeching System
The CT is a tough, single-walled vent pipe that works with most fuel types. It has three-inch overlap and ridged, plasma-welded seams for an air-tight seal.
SS, SSD, and SSID Secure Seal Gas Vent
These systems are engineered to guarantee a perfect fit, are laser-welded at the seams, and are "super-ferritic" (highly corrosion resistant).
CI Double-walled, Multi-fuel system
The CI chimney has a two-inch-thick layer of mineral-fiber insulation between its two stainless steel walls. The inner wall is loose so it can expand/contract with temperature changes, while the outer wall is rigid for strength.
Secure Temp™ ASHT+ All-fuel Chimney
The Secure Temp is the "ultimate" stainless steel chimney solution and ranks among the most popular venting products in the U.S. and Canada. Its unique Secure Plus insulating material and Twist-lock assembly set it apart from its competitors.
ATI staff have extensive expertise with SCI products and can assist you in the selection process.