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Atlas Roofing Corp.’s Techni-Flo is an engineered ventilation system for steep-sloped roofs. The component system is designed to ensure consistent intake and exhaust airflow under a commercial roof covering. It is made up of three components (Techni-Flo RV, CrossVent, and Techni-Flo EV) and works with shingle or standing-seam roofs. Techni-Flo helps prevent mold, ice dams, attic heat buildup, and shingle failure. It supports a larger net free area than comparable ventilation systems, and, when used with the company’s Ventilated Roof System Calculator, it provides balanced, consistent ventilation. atlasroofing.com