Thermopan 24" x 47.5" Ultra Fire Resistant Duct Panning Sheet

24" x 47.5" Ultra Fire Resistant Duct Panning Sheet Product Features FIRE-RESISTANT THERMO-PAN™ is a high-quality “No Noise” sheet metal alternative for constructing return air ducts No duct noise Satisfied homeowners Excellent for open web trusses Lightweight and easy to install Will not sustain combustion Airspace created provides R-Value = 5 No shop fabrication and no cut hands Code compliant: IRC (International Residential Code) R602.8, item 4 Fireblocking is required “at openings around vents, pipes, ducts, cables and wires at ceiling and floor level, with an approved material to resist the free passage of flame and products combustion.”