3M 7100043751 Venture Tape 1537CW White Foil Tape 2.83in X 50yd

Product Description

The 3M 7100043751 is a white foil tape designed for sealing and jacketing applications on HVAC duct insulation systems. Built on a tri-directionally reinforced metalized polypropylene film/scrim/kraft (FSK) facing, this tape delivers a low vapor permeance rating of 0.09 perms and bonds reliably in cold weather conditions. Its pressure-sensitive acrylic adhesive activates without heat, making it practical for field installation in unconditioned spaces and low-temperature environments. Licensed HVAC technicians and insulation contractors reach for this tape when code-compliant duct wrap termination and vapor retarder sealing are required.

The 1537CW is suited for residential and light commercial HVAC ductwork where a durable FSK jacket closure is needed. It is commonly applied at the seams and terminations of duct wrap insulation, vapor retarder laps, and mechanical insulation facings. The cold weather acrylic adhesive extends the usable application temperature range compared to standard formulations, making it appropriate for attic, crawlspace, and unheated mechanical room installations where substrate temperatures may be low at time of application.

Key Features

• Tri-directional scrim reinforcement resists tearing during application and service
• Cold weather pressure-sensitive acrylic adhesive bonds at low substrate temperatures without heat activation
• Low vapor permeance rating of 0.09 perms supports vapor retarder integrity at duct insulation joints
• Meets ASTM C1136 Type IV facing tape specification
• White metalized polypropylene film/scrim/kraft construction provides a clean finished appearance on exposed ductwork insulation
• Available in a 2.83 inch wide by 50 yard roll format sized for standard hand-held tape applicators

Compatibility

Designed as an OEM-style closure tape for FSK-faced duct wrap and board insulation systems meeting ASTM C1136 Type IV requirements in residential and commercial HVAC applications.

Installation Notes

Installation is typically performed by licensed HVAC technicians or insulation mechanics following SMACNA and local mechanical code requirements. Ensure duct and insulation facing surfaces are clean, dry, and free of dust or oils before applying tape to achieve full adhesive contact. Power down the air handling system before working on ductwork to prevent pressurization issues during sealing. Apply firm hand pressure across the full tape width after placement to maximize adhesive transfer to the substrate.