Designed for roofs with good sun exposure throughout the day, the AB-4022A model series fans feature an adjustable 40 watt unit mounted solar panel and self-flashing fan base for easy installation on roofs with composite shingles, cedar shake, flat concrete tiles, or other low profile roofing materials. Engineered with Attic Breeze UltraFlo® technology and second generation performance upgrades, the AB-4022A solar attic fan delivers up to 1,875 CFM of airflow in full sun exposure.