ToughGard and Ultra*Duct Black perform at air velocities of up to 5,000 fpm (25.4 m/s). Both also perform at maximum internal pressures of ± 2" (51 mm) water gauge, and 250°F (121°C).
Duct board products regularly meet the requirements of the following current specifications, standards and codes:

• Material Specifications UL181 for Factory Made Air Ducts and Air Connectors, Class 1 Rigid. Closure systems must meet the requirements of UL 181A.
• Fire Safety Standards NFPA 90A, NFPA 90B
• Building Code ICC
• GREENGUARD® Children & Schools

Acoustically Excellent

• Keeps air rush and equipment noise in a home to a minimum.
• Helps reduce noise generated by cross talk, system expansion and air movement.
• Thermally Efficient
• Improves energy efficiency and saves homeowners money by reducing heat loss or gain.
• Duct board system with properly sealed joints virtually eliminates leakage common with sheet metal ducts.
• Reduces or eliminates call-backs and results in satisfied homeowners.
• Moisture Resistant
• Provides superior moisture resistance compared to other duct boards.
• Reduces homeowner concern about problems from condensation, mold and bacterial growth.
• Cleanable
• Easily cleaned thanks to abrasion-resistant airstream surface.
• Surface is treated with an EPA-registered antimicrobial agent to reduce the potential for microbial growth.
• Cost Effective
• Resists damage during fabrication, installation, and cleaning.
• Generally costs less than sheet metal ductwork.

Composed of resin-bonded glass fibers with a reinforced foil laminate air barrier/vapor retarder facing applied to the outside surface and a textile fiber glass non-woven mat bonding to the air stream surface.

ToughGard and Ultra*Duct Black perform at air velocities of up to 5,000 fpm (25.4 m/s). Both also perform at maximum internal pressures of ± 2" (51 mm) water gauge, and 250°F (121°C).
Duct board products regularly meet the requirements of the following current specifications, standards and codes:

• Material Specifications UL181 for Factory Made Air Ducts and Air Connectors, Class 1 Rigid. Closure systems must meet the requirements of UL 181A.
• Fire Safety Standards NFPA 90A, NFPA 90B
• Building Code ICC
• GREENGUARD® Children & Schools