Metallic pipes (multiple, insulated interrupted, alupex composite 75mm, steel up to 219mm) through a plasterboard wall. Protecta EX Mortar 25mm to each side of wall with 50mm mineral wool inbetween. Max aperture 2400x1200mm
Fire rating: 120
Thermal rating: 90
Size: Alupex Composite 75mm, steel to 219mm
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