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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 single and multi-family homes- 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- Dimensions: 210 x 210 mm- Hole: ø 130 mm
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