The Chapin ProSeries Backpack Sprayer is ideal for the professional landscaper as well as the homeowner. The 4-Gallon poly tank has a 4-inch wide mouth opening for easy filling and cleaning. Featuring a 3-stage filtration system to prevent clogging, a translucent poly tank for viewing of fluid level, poly wand, cushion grip poly shut-off, brass nozzle and padded shoulder straps. Comes with a 3 piece nozzle kit. Viton seals provide compatibility with fertilizers, weed killers and pesticides.