Designed for roofs with good sun exposure throughout the day, our third generation SFA model series solar attic fans feature an adjustable unit mounted solar panel and offer a self-flashing base with pre-drilled mounting holes for easy installation on roofs with composite shingles, cedar shake, flat concrete tiles, or other low profile roofing materials. Equipped with a high-efficiency 25 watt monocrystalline solar panel and designed with our proprietary UltraFlo® technology, the SFA model series offers both superior performance and durability, delivering up to 1550 CFM of airflow performance under full sun exposure.