The PRO HD 400 ED is a light weight, durable and compact cold water pressure washer that offers ultimate mobility for on-site applications and is designed to be stored, transported and operated in the vertical and horizontal position. It's features include a reliable 3-piston axial-pump with a brass cylinder head, an automatice pres-sure relief system for protecting the pump and storage options for accessories. This unit is certified to UL and CSA safety standards.