... ,fiberglass Construction:Overall Grade/Function: HVAC/General Purpose .Backing: 18microns up to 100 microns, dead soft aluminum foilAdhesive: Clear acrylic adhesive ... , 72mm, 75mm, 96mm, 100mm; Jumbo Roll: 1.2M (Useable)..Roll Length:Slitted Roll: 20M to 100M; Jumbo Roll: Up to 1400M. Aluminum Foil Adhesive Tape ...