The 6" Vortex Liner kit is the only way to install your fireplace into an existing masonry chimney. Everything in one box! You get 5 metres of flex liner, a 24 degree offset to go on top of your heater, one adapter fitting to join the liner with the offset, a full stainless steel top flashing and a high quality full stainless steel chimney cap. It just does not get any better than this, and is priced to sell! All adapters and fittings have their own integrated worm drive clamps, so installation is a breeze. Made in Canada, and a best seller.