Johns Manville 90017601 Spiral Duct Insulation 1in 60in 115ft

Product Description

The JOHNS MANVILLE 90017601 is a fiberglass double wall spiral duct insulation blanket engineered for thermal and acoustical performance in commercial and residential HVAC duct systems. Manufactured using a rotary process, this resilient fiberglass blanket is rated to 350 degrees F and ships in a roll measuring 60 inches wide by 115 feet long, delivering 575 square feet of coverage per roll. At 1.04 pcf density and 1 inch thickness, it provides consistent insulation performance while resisting damage during duct fabrication and field handling. It carries a UL fire hazard classification rating of 25/50, meeting common project specification requirements.

This insulation is intended for use inside double wall spiral HVAC ducts, where it serves as both a thermal barrier and an acoustical liner. The blanket format is suited to shop fabrication environments where duct sections are assembled before installation. It is appropriate for commercial mechanical systems as well as larger residential applications where double wall spiral duct construction is specified. Sheet metal contractors and HVAC fabricators are the primary installers of this product.

Key Features

• Rotary process fiberglass construction resists compression and damage during duct fabrication
• 350 degrees F temperature rating supports a wide range of HVAC supply and return applications
• 1.04 pcf density delivers consistent thermal and acoustical performance
• UL fire hazard classification rating of 25/50 meets common specification requirements
• 575 square feet of coverage per roll reduces material handling and waste
• 60 inch width accommodates a broad range of spiral duct diameters in a single cut

Compatibility

Designed for use in double wall spiral HVAC duct systems requiring internal fiberglass insulation blanket lining. Model designation is 100.

Installation Notes

Installation is typically performed by sheet metal contractors during duct fabrication in a shop setting prior to field assembly. Follow applicable SMACNA guidelines and local mechanical codes for insulation placement and fastening within double wall spiral duct construction. Wear appropriate personal protective equipment, including gloves and respiratory protection, when handling fiberglass insulation materials. Do not compress the blanket beyond design thickness, as this will reduce thermal and acoustical performance.

Technical Specifications

• Material: Fiberglass
• Thickness: 1 inch
• Width: 60 inches
• Length: 115 feet
• Coverage Area: 575 square feet
• Density: 1.04 pcf
• Temperature Rating: 350 degrees F
• UL Fire Hazard Classification: 25/50
• Model: 100

Standard Information

• Brand: JOHNS MANVILLE
• Manufacturer Part Number: 90017601