Features:

• The 2000 SR features a triple laminate with industrial grade foil casing for durability, and an ultra-smooth double sealed core for frictionless and silent air flow.
• The "Carbon Black" inner core does not reflect light.
• "Rip-stop" prevents tearing, galvanized spring steel maintains duct shape and prevents rust.
• The SR series is c-ETL-us certification tested and verified to conform to UL181 standards. Also available in custom lengths.