4inx25' SR Ducting - Sold in CASE QUANTITY ONLY
ThermoFlo's 2000SR Ducting is specifically engineered to handle unconditioned air. The 2000 SR Series can withstand high heat, high humidity and excessive CFM without any failure or fatigue. 2000 SR features a triple foil laminate with industrial grade foil casing for durability, and an ultra-smooth double sealed core for frictionless and silent air flow. The inCarbon Blackin inner core does not reflect light. inRip-stopin 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.
