IL Chimney System

This system is a twin wall insulated pre-fabricated domestic gas vent that has been used in the UK for over 25 years, having built a reputation for quality and reliability. The IL gas vent is designed for naturally aspirated domestic gas fired appliances with a draught hood / diverter and where the chimney is required to operate under negative pressure and dry conditions and the flue gas temperatures will not exceed 250°C.

Available in three diameter sizes covering 100mm, 125mm and 150mm, the product consists of an aluminium liner and a zalutite outer case, separated by a 6mm air gap. This product is suitable for internal and external applications, but not suitable for condensing and positive pressure applications.

Gas Flue Boxes

SFL also provides several types of Gas Flue Boxes, all designed to be used with the IL Gas Vent System and, where Building Regulations allow, may be used with stainless steel chimney liners.

Gas  
N1  
T250  
Internal  
External

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