Vent


Mechanical Code

Vent

A listed factory-made vent pipe and vent fittings for conveying flue gases to the outside atmosphere.

Type B Gas Vent

A factory-made gas vent listed by a nationally recognized testing agency for venting listed or approved appliances equipped to burn only gas.

Type BW Gas Vent

A factory-made gas vent listed by a nationally recognized testing agency for venting listed or approved gas-fired vented wall furnaces.

Type L

A venting system consisting of listed vent piping and fittings for use with oil-burning appliances listed for use with Type L or with listed gas appliances.

(Uniform Mechanical Code® 224.0)