First, our improved single-hinged Flex-Z Fast bracket for more flexible, fast and easy installation. Other enhancements include a new elegant grille design, an environmentally friendly 26 gauge Zinc-Aluminum-Magnesium (ZAM) housing design and dual access junction box that helps simplify wiring in tight spaces. Features Customizable, all-in-one whole house precision ventilation solution ideal for use in the bathroom, laundry room, sun room, basement or garage Pick-A-Flow Airflow Selector; features a built-in speed selector (50-80-110 CFM model) combined with SmartFlow technology simplifies the selection process and ensures optimum performance to meet code and reduce callbacks New! Environmentally friendly 26-gauge Zinc-Aluminum-Magnesium (ZAM) housing design New! Improved Flex-Z Fast; single-hinge bracket with added flexibility, fast and easy New!