Due to the nature of alcohol-fueled logs, no venting is required. This ensemble includes ceramic logs   and a steel grate. The ceramic logs use gelled-alcohol fuel, buining up to 3 cans at a time.   This set to by used in a wood burning fireplace or comparable, or can be used anywhere there are no restrictions above the unit.   Ceramic Logs (17" wide) shown above

To build around this unit such as a fireplace mantle, please see correct unit with casing in fireplace section under Gel Alcohol fireplaces