Designed for northern facing roofs or shaded roof areas where more sun exposure is needed, The Zephyr™ CMD model solar attic fans feature a remote mounted solar panel for installation flexibility and offer a curb-mount base for use with roofs featuring tile, metal roofs, flat roofs or other installations where a roofing curb may be appropriate. Equipped with our proprietary monocrystalline solar panels and designed with UltraFlō™ technology, The Zephyr™ series solar attic fans offer both high performance and durability.