The aluminium tape is manufactured from high quality aluminium foil. It is a aluminium foil tape with acrylic covered by white silicone paper. This duct sealing tape comes in a thickness range of 14 to 35 microns. Normally, it is 48mm, 50mm, 72mm, 75mm,96mm, or 100mm wide. On average, one roll of such tape comes with length of 25m to 50m.