3M 3520CW_72X45.7 Foil Tape 2.83 in X 150 Ft Hvac

Product Description

The 3M 3520CW_72X45.7 is an aluminum foil tape designed for sealing and joining fibrous and sheet metal ductwork in HVAC systems. It measures 2.83 inches wide by approximately 150 feet long with a 3.7 mil total thickness. The tape combines a malleable aluminum foil backing with an acrylic adhesive and a paper liner. It is rated for use from -40 degrees F to 250 degrees F, making it suitable for high-heat and high-humidity environments found in residential and commercial HVAC installations. Licensed HVAC technicians and sheet metal workers are the primary installers.

This foil tape is engineered for fibrous duct board and sheet metal duct applications. The malleable aluminum backing conforms around corners and irregular surfaces without cracking or lifting. The hand-tearable construction allows technicians to cut strips on the job without scissors or a knife, speeding up field installation. The easy-release kraft liner separates cleanly, reducing wasted tape during application. It is appropriate for both new duct installation and repair work on existing systems in residential and light commercial settings.

Key Features

• Malleable aluminum foil backing conforms to curved, irregular, and cornered surfaces
• Acrylic adhesive maintains bond under high heat and humidity conditions
• Hand tearable — no cutting tools required for on-site installation
• Easy-release kraft paper liner for clean, controlled application
• Rated from -40 degrees F to 250 degrees F for demanding HVAC environments
• Meets UL 723 and manufactured under ISO 9001 quality standards

Compatibility

Designed for use on fibrous duct board and sheet metal duct in HVAC systems, per the application data provided by the manufacturer.

Installation Notes

This tape is installed by HVAC technicians and sheet metal workers as part of duct sealing and repair work. Surfaces should be clean, dry, and free of dust or grease before application to ensure full adhesive contact. Press the tape firmly along the entire length of the seam or joint, working from one end to avoid air bubbles. No special tools or adhesive primers are required for standard field installation.

Technical Specifications

• Type: Foil Tape
• Color: Silver
• Width: 2.83 inches (72 millimeters)
• Length: approximately 150 feet (45.7 meters)
• Thickness: 3.7 mil
• Backing Material: Aluminum
• Adhesive Material: Acrylic
• Liner Material: Paper (Kraft)
• Temperature Rating: -40 degrees F to 250 degrees F
• Application: HVAC, Fibrous and Sheet Metal Duct
• Certifications: UL 723, ISO 9001

Standard Information

• Brand: 3M
• Manufacturer Part Number: 3520CW_72X45.7