I was just given this osburn extended insert. I have been told inflicting info on the proper install. Some old timers have said just slid it in and I'm good. Some have said run a pipe up past the damper and I'm good. Some have said spend a fortune on one of the stainless 6" full length flex. So my issue is I don't have the money for the entire liner right now. So what should I do to have a safe efficient set up. I will say right before we moved in the seller put in a stainless liner all the way up the flue. I'm not sure if that makes a difference. Thank you for any advice and sorry for the poor pics. The insert is not in my hands yet but will arrive this week.
![[Hearth.com] Osburn insert install help [Hearth.com] Osburn insert install help](https://www.hearth.com/talk/data/attachments/189/189376-fdf14ffb17e3c783cf1565c631535747.jpg?hash=Ff3DU_HiL6)
![[Hearth.com] Osburn insert install help [Hearth.com] Osburn insert install help](https://www.hearth.com/talk/data/attachments/189/189377-91e043430cc150ba1d8693621e702f8d.jpg?hash=b3pT6AR4Lz)
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![[Hearth.com] Osburn insert install help [Hearth.com] Osburn insert install help](https://www.hearth.com/talk/data/attachments/189/189376-fdf14ffb17e3c783cf1565c631535747.jpg?hash=Ff3DU_HiL6)
![[Hearth.com] Osburn insert install help [Hearth.com] Osburn insert install help](https://www.hearth.com/talk/data/attachments/189/189377-91e043430cc150ba1d8693621e702f8d.jpg?hash=b3pT6AR4Lz)
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