1532159 Butyl Window Flashing Tape, 75 ft L, 6 in W, Black, SelfAdhesive, Osi, Mfr#: 2579106

OSI Butyl Flash is a rubberized butyl backed, selfadhering 15 mil membrane The foil backed exterior allows the flashing to be exposed to UV rays for at least 12 years It is efficient, easy to use and provides excellent moisture and air infiltration protection around windows It can also be used to seal doors and similar gaps and openings