125mm (5") ICID Twin Wall Structural Wall Band Extensions Type L1 - 450mm

Twin wall flue system with advanced corrosion resistant design and construction, using laser welded 316L stainless steel inner liner and a stainless steel case. Insulated with 25mm of high density rockwool maintaining flue gas temperature to maximise efficiency.

Components are jointed with a twist lock bayonet jointing system and secured by a locking band. The addition of a rubber joint seal facilitates the product for use on condensing and biomass appliances.

Twin wall insulated chimney system designed specifically for use on open or closed stoves with continuous operating temperatures of up to 450°C. The outer case is load bearing, leaving the inner liner free to expand independently accommodating thermal expansion within each and every joint of the system.

• HETAS listed for use on solid fuel applications and certified for corrosion resistance on gas, oil and solid fuel by Gastec MPA and TÜV
• T450 NI W V2 L50050 G60 / T450 NI D V3 L50050 G60 - in a combustible shaft.
• T450 NI W V2 L50050 G50 / T450 NI D V3 L50050 G50 - in free air or non-combustible shaft.