DuraVent Concentric Vent System 3" x 5" x 12" Black Vent Pipe Length l30 and you can do this

and you can do this safely with rags gripped by cooking tongs

high rise buildings

If you do not have an ash drawer

6" Diameter x 90 Degree Elbow

while giving you hidden access to on/off operation

DuraVent Concentric Vent System 3" x 5" x 12" Black Vent Pipe Length l30 and you can do thisAn economical venting solution for condensing and noncondensing appliances, the Concentric Venting System (CVS) features a UL1738 approved super ferritic stainless steel inner wall. The proprietary twist lock connection eliminates use of clamps or mechanical fasteners and saves installation time. Only one penetration is needed through the roof or the wall for both exhaust and combustion air. Multiple pipe lengths and telescoping pipe extensions