The Solo Backpack Sprayer is a powerful and versatile tool for outdoor use, with a 3 gallon capacity that holds up to 3 gallons of insecticide, weed preventer, or herbicide. The sprayer features a 48" hose, making it easy to reach and spray in various outdoor spaces. With a maximum working pressure of 473-D sprayer piston pump, this manual sprayer is efficient and effective for all your gardening needs. The white plastic construction is durable and easy to clean, while the medium size and 12 lb weight make it comfortable to carry on your back. Solo does not make this model anymore neither on the box or the sprayer itself is a model number. Ideal for professional gardeners or home enthusiasts.