When your job requires maximum productivity and versatility, turn to the DutyMax GH 300 HD sprayer to get the job done—fast! Equipped with more power and a long stroke, direct immersion pump, this hydraulic workhorse is built for the biggest, most demanding jobs and materials.With features that enable you to work more efficiently and finish jobs faster, DutyMax HD ProContractor Series gas hydraulic airless sprayers spray a wide range of materials – from latex and acrylics to more heavy duty materials like plasters, elastomerics, fire retardants and liquid roofing solutions.