F&L R8 Johns Manville Duct Insulation Panel – HVAC Thermal Fiberglass Insulation for Sheet Metal Duct Systems (2in x 24in x 48in)

Superior Acoustic Performance – Designed to absorb mid- to high-frequency sounds, these fiberglass insulation boards reduce echo, reverb, and noise transfer in any environment. Multi-Layer Thermal Protection – High R-value fiberglass helps maintain consistent indoor temperatures by reducing heat loss through walls, ceilings, and HVAC duct systems. Available in Multiple Sizes & Thicknesses – Choose from 1", 1.5", or 2" thick panels in convenient 24"x24" or 24"x48" formats for flexible installation across projects. Rigid, Durable Construction – Engineered with dense fiberglass core and firm edges for clean cuts, precise fits, and long-term structural stability in residential or commercial settings. Versatile Application – Ideal for soundproofing studios, acoustic treatment, HVAC duct lining, wall cavity insulation, and commercial acoustic barrier needs.