Spal USA offers a line of blowers featuring sealed motors to deliver improved interior air circulation in on- and off-highway applications. Blowers are available in 12- and 24-V, single- and double-wheel models to suit most HVAC system needs. The blowers can be used in exterior, exposed air circulation applications such as compartment venting or ducting cool air to a thermal core. Features include a waterproof and dustproof construction to operate in harsh conditions on agricultural and construction equipment as well as improved sound emissions quality. Lightweight, low-profile blowers can be installed in limited space applications. Assemblies are dynamically balanced to ensure low vibration and quiet operation. Spal offers single-, three-, and four-speed versions, as well as a selection of adjustable rectangular and circular louvers to complete a system.