Fireproof aluminum foil tape:air duct board tape,aluminum foil tape,fireproof material FSK scrim tape: Material:7um alu foil+scrim+release paperWidth:4.8cm,5cm,6cm,7.5cm,8cm,10cm,1.2m and so onLength:30m,50m,and so onPackage:24rolls/carton,16rolls/carton,12 rolls/carton or as your requirement