... resistance, and water vapor resistance Aluminum Foil Tape Features:1) High tensile strength aluminum foil made from special aluminum alloy, coated with aggressive solvent ... and seams of foil jacketing in air-conditioning duct workSpecifications:1) Foil thickness: 18, 22, 26μ2) Roll width: 48, 50 ... : 27, 30, 45, 50m4) Log roll: 1.2 x 45m, 1.2 x 50m5) Jumbo roll: 1.2 x 1200m, 1.2 x 1000m