The Chapin 4- Nozzle Poly Boom has a boom length of 51 inches and each spray nozzle puts out 0.4 gpm (gallon per minute) . Depending on how far from the ground the boom is will depend on the spray width. For further questions, please contact Chapin directly at 1-800-950-4458
The distance between nozzles on the Chapin 4-Nozzle Poly Boom (6-7782) is about 17 inches apart. The distance between the end nozzles is 51 inches. The width of spray will depend on how far the boom sprayer is off the ground.