3M(TM) Venting Tape 3394, 1 1/2 in x 36 yd 4.0 mil, 24 per case Bulk 3M(TM) Venting Tape 3394 Pink, 6.0 mil (0.15 mm) non-woven, synthetic backing with a low-tack acrylic adhesive 3M(TM) Venting Tape 3394, used in a variety of venting applications, allow the confinement and outgassing of foam insulation, non-woven backing for conformability