542 50 50 25 17 90° weight (kg) 71 17 25 90° 50 50 weight (kg) 71 50 50 25 17 135° weight (kg) 83 17 25 135° 50 50 weight (kg) 83 135° External 135° Internal 90° External 90° Internal corners 17x25 2 5/15 type IF2 4 edge courses width 25cm edge courses
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