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ICC Chimney – Model RIS

Insulated Stainless Steel Chimney


Model RIS is a type “A” factory-built chimney suitable for venting negative or neutral draft (non-pressurized) appliances including boilers, building heating equipment, fireplaces and stoves. RIS has been designed, tested, and listed to vent large wood burning fireplaces and to extend masonry chimneys.

Model RIS insulated stainless steel chimney is suitable for use on appliances that burn wood, oil, coal, natural gas, and charcoal and is available in 10″ through 24″ diameters.

UL 103HT, the standard for solid and liquid fuel chimneys.


  • Wood
  • Oil
  • Coal
  • Natural or LP Gas
  • Charcoal

Model RIS is certified to vent wood burning stoves, fireplaces and residential furnaces. In addition, there are a number of RIS components specifically designed and certified to vent large open masonry fireplaces burning wood and/or gas. There are also specific components designed to extend masonry chimneys and repair earthquake damaged masonry chimneys.

Note for customers in Canada: Model RIS is not certified to the ULC S-629 Standard. Do not install an RIS system on a wood fireplace without first contacting your local authority for approval. ICC can provide complete engineering services (sizing, material selection, installation recommendations, drawings etc.) to assist you in obtaining approval. However, we can not guarantee that it will be accepted in all cases. If you have a large fireplace project you would like to quote on please be sure to contact us in advance so we can work with your local engineer, architect and building authority.

Allowable Flue Gas Temperatures:
Max Continuous 650°C (1,000°F)
Brief Forced Firing 925°C (1,400°F)
Tested to 1,150°C (2,100°F)

Clearance to Combustible Materials:
Model RIS is certified for 2″ clearance to combustible materials


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