The US system is a modular concentric balanced flue system, made of stainless steel which combines air inlet and flue. US is suitable for high temperature, non-condensing applications with flue gasses in negative pressure. It can be applied on all types of balanced flue gas-fired stoves (class C11 and C31).
High temperature, non-condensing applications
Balanced flue gas-fired stoves (class C11 and C31)
This superb animation shows how easy it is to install with an inset stove and a horizonatal terminal.
Helpful sections for chimney installers