Concentric flue systems allow simultaneous air intake and gas exhaust for room sealed gas appliances.
Dinak DIFLUX concentric flue
Concentric balanced flue system that combines air inlet and flue - Condensing and Dry applications. Gas or oil appliances. Temperature not exceeding 200°C.
Concentric balanced flue system that combines air inlet and flue - Dry applications (non-condensing) with negative pressure in flue. Can be used on all types of balanced flue gas-fired stoves (class C11 and C31), temperature not exceeding 600°C.