390 turbo III coming soon! Be sure to check back for more details on our new product launch of turbo III – Model 390. It’s a completely new turbo design, with smooth trouble free bearings, twist-lock cover design and heavy duty features certain to meet the most demanding applications. Flow range from 300-700 cfm, with efficiency over 80% (ISO coarse dust, measured per ISO 5011 spec.) Rust free components, molded of impact-resistant glass-reinforced nylon, it is also economical and will complete Maradyne’s highly successful product range offering of turbo II and turbo III Precleaners.