Indoor/outdoor roll mastic tape
UL 723 Classified
FSI 20/SDI 40 Pressure Classes SMACNA 1/2, 1,2,3,4 & 6; Seal Classes A,B,C
ShurMASTIC® indoor/outdoor roll mastic foil tape has a butyl rubber adhesive and is used for air-tight and moisture-free sealing of sheet metal and PVC coated duct systems. UL 723 Classified.