Designed for fabrication into supply and return air duct work for both residential and commercial heating, ventilating and air conditioning systems. CertainTeed duct board products can be fabricated into square, rectangular or multi-sided sections. Standard, factory molded male and female shiplap edges ensure tight and strong fabricated transverse joints. Composed of resin bonded glass fibers with a reinforced foil laminate air barrier/vapor retarder facing applied to the outside surface and a textile fiberglass non-woven mat bonding to the air stream surface.

CertainTeed® Ductboard, Series EI475 Series, Barrier Material: Fiberglass, Black, 35 to 250 deg F, 0.23 Btu/hr BTU, 120 in Length, 48 in Width, 1 in Thickness, Flexible/Rigid: Rigid

• Quiet system - the fiber glass acoustical insulation attenuates unwanted cross talk, air rush and equipment noise
• Lower operating costs - the exceptional low leakage rate (SMACNA class 6), in combination with the thermal efficiency of ToughGard and Ultra Duct® black, means savings in energy and improved system performance
• Reduces condensation - the built-in vapor retarder on ToughGard and Ultra Duct® black reduces the chance of condensation and the resulting chance of material and system damage caused by unwanted moisture
• Durability and clean ability - ToughGard's tough air stream surface makes it resistant to fabrication, job site and installation damage and provides extra protection during system cleaning
• Ultra Duct® black and ToughGard duct board can be cleaned effectively with industry recognized duct cleaning equipment and procedures as outlined in the NAIMA duct cleaning guide
• Proper design, filtration, maintenance and operation of the HVAC system will reduce the need for cleaning
• Resists microbial growth - the air stream surface of CertainTeed duct board contains an EPA registered anti-microbial agent to reduce the potential of microbial growth that may affect this product
• The anti-microbial properties are intended to only protect this product