Intertape 91409 Duct Tape 2in 9mil White AC20

Product Description

The INTERTAPE 91409 is a polyethylene foam duct tape engineered for demanding sealing, bundling, seaming, and wrapping applications in residential and light commercial construction. At 9 mil thick and 2 inches wide, it delivers a tensile strength of 18 pounds per inch, making it suitable for jobs that require a durable, conformable bond. The rubber adhesive system provides reliable adhesion across a broad service temperature range of 32 degrees F to 160 degrees F. Part of the Series AC20 product line, this white tape meets recognized building codes and fire standards, giving installers confidence on regulated jobsites.

This tape is used in HVAC, general construction, and building envelope applications where a code-compliant duct tape is required. Typical scenarios include sealing ductwork joints, closing boxes, bundling pipe insulation, and seaming vapor barriers or polyethylene sheeting. Its compliance with BOCA Code, HUD Code, L.A. County Code, and UL 723 makes it a go-to choice for inspected residential and commercial installations. HVAC technicians, insulation contractors, and general trades regularly specify AC20-series tape where code-listed materials are called out on a project.

Key Features

• 9 mil polyethylene foam construction provides conformability and puncture resistance
• 18 lb/in tensile strength handles bundling and seaming loads without tearing
• Rubber adhesive bonds across a 32 degrees F to 160 degrees F operating range
• White color for clean, finished appearance on exposed duct or insulation surfaces
• Meets BOCA Code, HUD Code, L.A. County Code, and UL 723 requirements
• Part of the Series AC20 product line for consistent performance across roll sizes

Compatibility

Designed for use in residential and commercial HVAC duct sealing, building insulation seaming, and general construction applications requiring a code-listed polyethylene foam duct tape.

Installation Notes

This tape is typically applied by HVAC technicians and insulation contractors working on duct systems or building envelope assemblies. Surfaces should be clean, dry, and free of dust or oil before application to ensure full adhesive contact. When used for duct sealing on inspected systems, verify that the tape listing meets the local authority having jurisdiction requirements prior to installation. Do not apply below 32 degrees F, as adhesive performance may be compromised at temperatures outside the rated operating range.