Duct (up to 1250 x 1000mm) through a fire-rated concrete floor. Protection from external fire (up to 240mins). 3M Duct Wrap 615+ single layer around duct with double layer at penetration. Plasterboard collar finished with 3M Fire Barrier CP25WB+ sealant.
System ID #: 231
Max Fire Rating: 240
Max Thermal Rating: Up to 240
Size: Up to 1250 x 1000mm
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