The lightweight and compact design of the NTX series was developed for small to mid-sized recreational and commercial vehicles. With its unique Hypersurge technology, the NTX Series is a great choice for powering a fridge, microwave, or power tools in Class B RVs (camper vans), travel trailers, work vans and long-haul commercial trucks.It features a single, load-controlled variable speed fan for quiest operation and is ETL safety certified to meet strict UL and CSA safety standards for operation in the USA and Canada.