3M 7100043805 Aluminum Foil Tape 2.83 in 50 Yd Acrylic

Product Description

The 3M 7100043805 is a dead-soft aluminum foil tape designed for sealing, patching, and splicing applications in HVAC ductwork, insulation jacketing, and related mechanical systems. The 1.8 mil aluminum foil backing is coated with a cold-weather acrylic pressure-sensitive adhesive that maintains bond strength in low-temperature environments. The tape measures 2.83 inches wide and 50 yards long per roll, providing substantial coverage for field applications. It is hand-tearable, eliminating the need for a dispenser or cutting tool on the job. The UL 723 classification with a 5/10 flame and smoke rating and ULC S102 classification with a 10/0 rating make it suitable for installations where fire and smoke performance requirements apply.

This tape is used primarily in residential and light commercial HVAC installations for sealing rigid and flexible duct joints, securing duct insulation, and repairing foil-faced insulation. It performs in cold-weather conditions, making it appropriate for work in unconditioned spaces such as attics, crawlspaces, and mechanical rooms during winter months. HVAC technicians and sheet metal workers are the primary installers. The cold-weather adhesive activates with hand pressure and does not require heat for activation.

Key Features

• 1.8 mil dead-soft aluminum foil backing conforms to irregular duct surfaces
• Cold-weather acrylic pressure-sensitive adhesive maintains bond in low-temperature conditions
• Hand-tearable — no dispenser or cutting tool required
• UL 723 Classified with 5/10 Flame/Smoke Rating
• ULC S102 Classified with 10/0 Flame/Smoke Rating
• 2.83 inches wide by 50 yards per roll for extended coverage

Compatibility

Designed for use with rigid fiberglass duct board, sheet metal ductwork, and foil-faced insulation in residential and commercial HVAC systems where UL 723 or ULC S102 flame and smoke performance is specified.

Installation Notes

Installation is typically performed by licensed HVAC technicians or sheet metal workers in accordance with SMACNA guidelines and local mechanical codes. Surfaces should be clean, dry, and free of dust or grease before application to ensure full adhesive contact. Apply firm hand pressure across the full width of the tape after placement to activate the adhesive bond. No primers or heat tools are required for standard installations.

Technical Specifications

• Backing Material: Dead-soft aluminum foil
• Backing Thickness: 1.8 mil
• Adhesive Type: Cold-weather acrylic pressure-sensitive
• Tape Width: 2.83 inches
• Tape Length: 50 yards per roll
• Color: Silver
• Unit of Measure: Roll
• Package Weight: 32.737 pounds
• Package Length: 11.88 inches
• Package Width: 11.88 inches
• Package Height: 12.25 inches
• UPC: 051128960207
• Fire/Smoke Rating: UL 723 Classified 5/10; ULC S102 Classified 10/0

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100043805