Vitreous pipe: 6" heavy-grade vitreous flue pipe: various lengths available chimney-liner So if you add this

So if you add this to a 500 you get 740 useable length

Can sweep from stove no bolts to undo

Brilliant product that provides a neat method of surrounding the black vitreous flue pipe as it passes through a closure plate (the plate that seals off your chimney above your stove)

Nine-inch square plate with internal membrane of fireproof material

Steel body

Vitreous pipe: 6" heavy-grade vitreous flue pipe: various lengths available chimney-liner So if you add thisStraight lengths can be cut (cut top only*) using a small grinder and metal cutting disc (disc available on this site). *As with all vitreous pipe the bottom end narrows to a lesser diameter to enable insertion into other pieces of pipe (male is always on top). Key reason is that any condensation that trickles down inside pipe cannot escape.