Johns Manville Micro-Aire® duct board is used to fabricate ducts for commercial and residential construction and delivers excellent acoustical and thermal performance. It is produced using our dedicated manufacturing process that results in increased product consistency for efficient fabrication. Micro-Aire® flexibility and design saves contractors weight and cost. In addition, installed Micro-Aire® has less air leakage compared to metal ducts, which provides building occupants with more consistent temperatures, improved comfort and energy efficiency.

JM Micro-Aire® Duct Board, Type 475 Style, Fiberglass Barrier, Yellow, 40 to 250 deg F, 120 in Length, 48 in Width, 1 in Thickness, Flexible/Rigid: Rigid

• Durable airstream surface
• Low resistance to air flow
• Quiet operation
• Will not support microbial growth
• Micro-Aire® duct board passes UL 181 mold growth resistance testing
• Tests were conducted in accordance with ASTM C1338 and ASTM G21 (fungi testing)