Designed for northern facing roofs or shaded roof areas where more sun exposure is needed, The Zephyr™ SFD model solar attic fans feature a remote mounted solar panel for installation flexibility and offer a self-flashing base for easy installation on roofs with composite shingles, cedar shake, flat concrete tiles, or other low profile roofing materials. Equipped with our proprietary monocrystalline solar panels and designed with UltraFlō™ technology, The Zephyr™ series solar attic fans offer both high performance and durability.