Chimney starter kit in Silvacore Duraflue PRO: through wall, off rear, more elbows allowedBUILDING REGULATION COMPLIANTincludes sweep access, ability to remove stove without dismantling chimney, wall lined with sleeve and no 'connection between parts' in wall. All building regulation requirements often ignored by other sellers. Creating a clip together chimney for a wood burning stove is not difficult but there are quite a few possible "design scenarios" for different building types. But going out through a wall is almost always the same