Trisonic Aluminum Foil Tape Heat Shield Reflector Sealing Adhesive 1.89" X 10. Quality Aluminum Foil Tapes are ideally suitable for sealing off airconditioning and cool/warm air flow ducting and for sealingjoints in ducting providing a flame retardant and vapour-proofbarrier. A flexible and strong bright aluminum tape for use on most surfaces. General purpose heat reflector and heat dissipator. Can be applied to high/low temperatures. Suitable for joining and sealing applications for indoor/outdoor use. Measures: 1.89" x 10 Yards. Easy application and removes clean.