1-1/2" x 48" x 100' Duct Wrap

Johns Manville Microlite Type 75 Duct Wrap Insulation – FSK Faced

The Johns Manville Microlite Type 75 Duct Wrap is a fiberglass insulation product designed for HVAC duct systems, providing thermal efficiency and condensation control. Its 1-1/2" thickness with FSK (foil-scrim-kraft) facing delivers reliable thermal performance and vapor barrier protection for commercial and residential applications.

Professional Application

Manufactured to meet industry standards, this duct wrap is commonly used by mechanical contractors for insulating sheet metal ducts. It improves system efficiency by reducing heat loss or gain and supports compliance with energy codes and mechanical specifications.

Key Features

• Thermal Performance – R-value of 4.2 helps maintain duct efficiency across a range of operating conditions.
• Vapor Barrier Facing – FSK facing provides moisture control and meets fire and smoke performance requirements.
• Lightweight and Resilient – Fiberglass blanket construction simplifies handling and installation on job sites.
• Formaldehyde-Free Binder – Manufactured with an environmentally responsible binder system for improved indoor air quality.

Technical Specifications

• Material: Rotary-process fiberglass blanket
• Thickness: 1-1/2 inches
• Dimensions: 48 inches wide x 100 feet roll
• R-Value: 4.2
• Facing: Foil-Scrim-Kraft (FSK)

Installation Considerations

Installation should be completed by qualified HVAC or mechanical contractors to ensure compliance with local building and energy codes. Proper fastening and sealing of the facing are required to maintain vapor barrier integrity and achieve specified thermal performance.

Contractor Benefits

The Johns Manville Microlite Type 75 Duct Wrap provides contractors with a reliable, code-compliant insulation material that improves duct performance, reduces energy loss, and ensures long-term system efficiency. Its lightweight construction helps reduce installation time while maintaining durability in service.

Summary

Engineered for duct insulation applications, the Johns Manville Microlite Type 75 Duct Wrap with FSK facing offers thermal efficiency, condensation control, and ease of installation. Suitable for both residential and commercial HVAC systems, it is a professional-grade solution for meeting insulation and energy code requirements.