3M 425 Premium Aluminum Foil Tape – 4.6 Mil, 1/2″ x 60 Yards, Silver

The 3M 425 Aluminum Foil Tape is a premium grade, 4.6 mil thick, aluminum backed tape featuring an acrylic adhesive. It provides a waterproofing barrier and air leak protection, making it ideal for applications requiring high thermal conductivity, such as HVAC and insulation projects. Its flame-resistant properties and heat and light reflective surface enhance visibility and meet UL 723, Class L File R 7311, and UL 764c standards. Resistant to ultraviolet degradation, this tape ensures long-lasting performance. Sold as 1 roll of 1/2″ x 60 yards.