Maradyne’s Mach Two Extreme Dual 16-inch Fan is designed to fit trucks with radiators whose core is 34 inches wide. They feature the manufacturer’s quiet S-blade design and work as a puller fan delivering a maximum airflow of 4,320 cubic feet per minute. The fan, which has two 225-watt sealed heavy-duty motors that are dust and waterproof, is designed to provide increased horsepower, fuel efficiency and cooling. The benefit during towing at a heavy load is high-performance electric fans don’t rob as much power as clutch-driven fans, essentially increasing performance. Maradyne High Performance Fans: (800) 435-7953, Online Information.