This herbicide hood measures 14 inches in width. It helps reduce drift and overspray around sensitive areas when installed on the end of the spray wand. The hood includes a gray deflector fan nozzle, nozzle holder, and a tightening ring. Install the nozzle in the back hole for proper spray application. We suggest that you pair this herbicide hood with either a green, or yellow, EcoValve pressure regulator. This increases the efficiency of the spray hood by further limiting the drift and overspray of herbicides. Fits all Jacto backpack sprayers!