DOUBLE WALLED sandwich type CHIMNEYS with stainless steel outer and inner layers and rock wool insulation in between.
They are the most suitable for exhaust and hot gas extraction from natural gas or oil boilers, fireplaces, heating, ventilation and operation in corrosive oxidizing environments.
Burning performance is improved with double walled chimneys, because the draw in the chimney is increased and exhaust gas condensation is minimized.
The connections of the chimneys and their accessories are absolutely tight with special type clips.
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