551 weight (kg) 110 weight (kg) 110 weight (kg) 126 weight (kg) 126 50 50 20 30 90° 30 20 90° 50 50 50 50 20 30 135° 30 20 135° 50 50 135° External 135° Internal 90° External 90° Internal corners 30x20 2/2 type IB 4 edge courses width 20cm edge courses
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