UL approval aluminum foil tape Features:1) Soft aluminum foil, combined with a transparent high performance flame-retardant adhesive, which provides high peel adhesion, ... for sealing joints and seams of foil jacket facings in air-conditioning ductworkSpecifications:1) Foil thickness: 18, 22, 25, ... / ply-wooden caseJumbo roll: ply-wooden case Sell Flame-Retardant Aluminum Foil Tapes - UL approval