Duct (up to 1250 x 1000mm) through a fire-rated concrete floor. External or internal fire protection. 3M Duct Wrap 615+ single layer around duct with double layer at penetration. Plasterboard collar finished with 3M 2000+ Silicone sealant.
Fire rating: Up to 120
Thermal rating: Up to 120
Size: Up to 1250 x 1000mm
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