491 is a foil, skrim and kraft combined with an all weather rubber adhesive to maximize insulation integrity. It is used for sealing cold and dual temperature duct seams and joints where FSK is the basic insulation facing. The skrim bends with the primary facing and gives a strong, finished look. 491D is the same product in circular disc form provided on a continuous roll.
Aluminum Foil FSK Tape
• 38.00 lbs/in