3M 7100043875 Aluminum Foil Tape 3.89 in X 50 Yd Cold Weather

Product Description

The 3M 7100043875 is a 1.8 mil aluminum foil tape engineered for duct sealing, heat shielding, and light-reflecting applications in HVAC and sheet metal work. It uses a pressure-sensitive cold weather acrylic adhesive that maintains reliable adhesion at temperatures as low as -10 degrees F, making it suitable for installations in unconditioned spaces, cold storage areas, and winter field work. The flexible aluminum foil conforms to curved, irregular, and fibrous surfaces without cracking or lifting. At 3.89 inches wide and 50 yards long per roll, it covers substantial linear footage in a single roll.

This tape is designed for use on fibrous ductboard and sheet metal ducts in residential and light commercial HVAC systems. It also performs well in general-purpose heat shielding and light-reflecting applications where a conformable, metallic barrier is required. The hand-tearable construction allows technicians to work quickly on site without knives or dispensers, and the easy-release liner reduces handling time during installation.

Key Features

• 1.8 mil nominal aluminum foil construction for durability and conformability
• Cold weather acrylic adhesive rated for adhesion down to -10 degrees F
• Conforms to fibrous ductboard and sheet metal duct surfaces
• Hand tearable — no tools or dispenser required for field cuts
• Easy-release liner for fast, clean application
• Suitable for heat shielding and light-reflecting applications

Compatibility

Designed for use on fibrous ductboard and sheet metal ducts; also suitable for general-purpose heat shielding and light-reflecting applications across a range of HVAC and construction substrates.

Installation Notes

Aluminum foil tape of this type is typically applied by HVAC technicians and sheet metal installers during duct fabrication or sealing. Clean and dry the substrate before application to ensure full adhesive contact. In cold weather conditions, store rolls at moderate temperature before use when possible to optimize initial tack. No special tools are required — the tape is hand tearable and pressure-applied.

Technical Specifications

• Foil Thickness: 1.8 mil nominal
• Tape Width: 3.89 inches
• Tape Length: 50 yards per roll
• Adhesive Type: Pressure-sensitive cold weather acrylic
• Minimum Application Temperature: -10 degrees F
• Color: Silver
• Package Weight: 29.6 pounds
• Package Dimensions: 11.13 x 11.13 x 12.56 inches
• UPC: 00051128955208

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100043875