Chmney clamp or suspending cowl for log burner

[Petefinny]

hi there just done my hetas and am pricing up a job so any help would be allowed, am I allowed to use a suspended cowl to attach my liner to at the chimney pot or do I have to use a plate and clamp? the suspened cowl will save a lot of time and effort, also what's the difference between a 316/316 6" flue liner and a 904/316 6" flue liner? any help would be greatfull?

 

[Ermintrude]

904 last longer and better quality? Also pot hanger is fine, some BC can whinge on.

 

[Roger Welton]

Pot hangers always seem like the push fit of the flue world to me

 

[Jazz Head]

Screw fit pot hanger, uses the thread on the liner, same as screw on adapter to stove pipe at the bottom, very quick and the liner can be cut to length up top, held in place by the insulation and screw it on...simples qweeek