The modular system provides the best possible aerodynamics, optimized design and high strength materials such as thermoplastic and metal components. By covering fan sizes from 35.43 – 37.24 inches (900 – 1250 mm) and its compatibility with AC and EC motor technologies, SMARTPACK sets a new standard of functionality, flexibility and efficiency. Meets current and foreseeable European and International compliance and conformity requirements. For EC motors, SMARTPACK achieves and maintains the highest possible efficiency levels within a wide operating range.