The Air-O Fan "Reverse Fan" GB-34 & GB-36 "Short Stack" vineyard sprayers out-perform, out-last, and out-sell all other vineyard tower sprayers combined. Other manufacturers have tried to duplicate our tower and up-spray volute without success. The "Reverse Fan" models reduce the amount of leaves and dirt that normally plug the fan guard and housing. Fan life in sandy soil vineyards far exceeds conventional fan housings. Serviceability is made easier with larger guards and inspection covers. The amount of controllable air volume enables the operator to spray every other row throughout most of the growing season for most applications. Controllable air and direct coverage reduces drift and saves time and chemicals. The GB-34R & GB-36R "Reverse Fan" vineyard sprayers combine performance and simplicity, and can be used in both concentrate and dilute applications.

The "Reverse Fan" models are available with the Air-O-Fan 2-point turning hitch option, indented tank option for narrow rows, and a Myers® 2-stage centrifugal pump option.