UK+ is a modular, concentric solution designed to efficiently combineflue gas exhaust with combustion air supply. This system is made ofhigh-quality stainless steel and equipped with a sealing ring, ideal forclosed combustion appliances such as boilers and water heaters. Itserves as a concentric flue pipe for closed gas boilers and as acombined flue gas exhaust and ventilation pipe for the boiler room,ensuring reliable and efficient operation.