We do chimney metal vent installation for B-vent for gas systems, Class A pipe for wood burning and oil systems, and L-vent for oil systems only. 
 
These are primarily chosen for decorative applications and offer the aesthetic appeal of a traditional open-front fireplace with the convenience of gas controls. These fireplaces are vertically vented, naturally drafting appliances that use an economical Type-B gas vent for installation. Glass fronts and outside air kit options are available to help reduce the amount of room air that is drawn out of the living area.B-vent as described on Superior Fireplaces website 
 
Type B gas vent uses a double wall of metal pipe for insulation and safety. The inner pipe of reflecting aluminum heats quickly, containing the warm flue gasses inside. The airspace between the inner and the outer pipes provides insulation against heat loss to keep the warmer flue gasses on the rise.
 
Class A pipe is used to vent high-temperature exhaust released from wood, coal, and oil-burning appliances such as fireplaces, stoves, boilers, and furnaces. Not every venting system requires a Class A pipe, but it is absolutely necessary for use with all wood-burning fireplaces and stoves.
 
Type L vents are designed for venting approved oil-fired and natural-gas appliances that produce draft hood flue gasses that do not exceed a temperature of 570º F (299º C), or 926º F (299º C) for 10 minutes in an over-fire situation.

Genesis Chimney can do all of these types of metal vent installation depending on the system that you have. Contact us for a consultation.