inter tape polymer group PRODUCT DATA SHEET Product Code POPULIST Product: UL-181 AP Aluminum Foil (Shrink Wrapped with Top Label) Description: Conforms to UL 181-A-P and SMACK FATS 101-73 performance standards. (Printed for easy identification / inspection). Designed and engineered for use on UL listed rigid fiber air duct and connector closure systems for seaming and sealing to enhance appearance and provide vapor barrier protection.