Balanced flue gas fires vent directly through an external wall by means of a horizontal co-axial pipe (one pipe within another). Air is drawn in through the outer pipe, and combustion gases are expelled through the inner pipe. Balanced flue fires do not require an electricity supply.alanced flue gas fires vent directly through an external wall by means of a horizontal co-axial pipe (one pipe within another). Air is drawn in through the outer pipe, and combustion gases are expelled through the inner pipe. Balanced flue fires do not require an electricity supply.
A keyboard which is connected to the computer by use of a USB cable. A keyboard which is connected to the computer by use of a USB cable.
A USB port is a connection point on computers and many other types of consumer electronics that supports network data transfer and battery charging. A USB port is a connection point on computers and many other types of consumer electronics that supports network data transfer and battery charging. Menu Lifewire