Aerodynamically designed shields and fully shielded curtains contain chemical spray within the spraying chambers for on-target application. Four-nozzle spraying chambers provide uniform coverage, applying small droplets which “stick” to vegetation. Provides more coverage per tank (up to 5.5 acres or 240,000 square feet) using less chemicals. Adding wings to the single section 52-inch model will expand it to a 132-inch width (except Economy Model).