What are the available densities of flexible fiberglass duct insulation (temp wrap)?

Flexible fiberglass duct insulation is available in a range of densities that affect its thermal performance and application suitability. The correct answer highlights densities of 1", 1-1/2", and 3/4" lb/ft³, which are common in the industry for providing thermal resistance while still being flexible for easier installation around ductwork.

Fiberglass insulation is produced in various densities to cater to different application requirements and installation conditions. The option that includes these specific densities indicates an understanding of standard offerings in the market. Each density has its purpose, and the flexibility of fiberglass allows it to conform to irregular shapes and fittings in duct systems, which is crucial for maintaining efficiency and effectiveness in thermal insulation.

While other options may reference different densities, they do not align with the typical measurements recognized in the industry for flexible fiberglass duct insulation. The emphasis on the logical choices in B reflects industry standards and practical applications, making it the appropriate selection in this context.