Curtain walling, Cladding (buildings), Non-loadbearing walls, Air permeability, Permeability, Performance, Classification systems, Grades (quality)
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Code
BS EN 12152 2002 Curtain walling - Air permeability - Performance requirements and classificationhttp://www.4shared.com/office/yPasRY41/BS_EN_12152_2002_Curtain_walli.html
