The Secure Stack Pro Series, Models SCL, CAX1, CIX1, CIX2, CIX4, and CIX3Z venting systems are designed to offer the ultimate in installation convenience and versatility for a variety of applications. Certified for commercial chimney and diesel exhaust applications, they are constructed of thick-gauge material for the inner pipe that provides a strong and rigid assembly. Featuring a self-centering flue extension design that significantly simplifies and accelerates the installation process.
Available in sizes from 5″ to 36″ diameters, the CIX line offers double-wall configuration with a choice of 1″, 2″, 4″, or 3″ insulation and the CAX line offers a 1″ air insulated product. For premium corrosion resistance and durability, the inner flue is constructed from 0.035″ thick 304 or 316 Stainless Steel. This is coupled with a 0.024″ thick 304 Stainless Steel or Galvalume (Aluminum-zinc coated) steel outer casing. The CIX line features the highest-quality insulation, densely packed to ensure low heat loss and maximum draft.
Secure Stack Pro is available in the following configuration:
SCL: Single Wall
CAX1: 1″ Air Insulated
CIX1: 1″ Insulated
CIX2: 2″ Insulated
CIX4: 4″ Insulated
CIX3Z: 3″ Insulated
Applications include: Low and High-Pressure Steam Boilers; Diesel and Turbine Exhaust; Building Heating Equipment. Industrial Furnaces; Processing Equipment; Kilns and Ovens; Grease Duct.
Materials and Construction
Inner Wall Material Thickness
5” – 18” .035” Laser welded, 304 or 316
20” – 36” .035” Plasma welded, 304 or 316
Outer Wall Material Thickness
5”- 12” .024” Laser welded, 304 or Galvalume
14”- 36” .024” Pittsburg Lock, 304 or Galvalume
UL 103 – Building Heating Appliance
UL 103 (HT) – Standard for Factory-Built chimneys for residential type and building heating appliances
UL 1978 – Standard for Grease Ducts
UL 2221 – Standard for tests of fire resistive Grease Duct enclosure assemblies. CIX3Z only
UL 2561 – Standard for 1400°F Factory- Built Chimneys. Excludes CIX3Z
UL 1777 – Standard for Chimney Liners. SCL only
ULC/ORD C959 – Chimneys, Industrial 540°C and 760°C
ULC S604 – Standard for Factory-Built Type A chimneys
ULC S662 – Standard for Factory-Built Grease Duct
ULC S635 – Standard for lining systems for existing masonry or Factory-Built chimneys and vents.