DuraVent Concentric Vent System 3" x 5" 90 Degree Black Elbow 2000-2999 btu147000 And of course

And of course

replaceable Material Measured Wood/timber and building material ie

3ft Stainless Steel Flex

River Rocks

The 2-inch PVC pipe can run up to 50 feet to terminate vertically or horizontally

DuraVent Concentric Vent System 3" x 5" 90 Degree Black Elbow 2000-2999 btu147000 And of courseAn 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