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- Shaft element made of vapour-hardened aerated concrete- Flue gas duct in F90 lightweight shaft for gas and oil condensing boiler technology in detached houses and apartment blocks- Suitable for new builds, conversions and renovations- Simple installation and bonding of the shaft elements using thin-bed mortar- 90-minute fire resistance- Suitable for all building classes- Consisting of:- 1 x ceiling connection element, with inspection opening- 1 x roof duct- 1 x flat roof collar (0° - 3°)- 1 x anchor plate
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