4X More Airflow Up To 4,000 CFM and Up To 600 FPM Free Parts and Service for Life w/Registration RIDGID introduces the R860722B 18V Brushless Hybrid 18"Drum Fan. RIDGID??s brushless motor technology delivers maximum performance and longer runtime. This Hybrid Drum Fan delivers 4x more airflow(compared to the R860721 18V Jobsite Fan)utilizing up to 4,000 CFM and up to 600 FPM w/6 speed settings. It is up to 70% quieter than the corded competitor and delivers up to 15 hours of runtime on low speed when using RIDGID??s 12.0Ah MAX Output EXP battery. The hybrid feature on the 18V Brushless Hybrid Drum Fan allows the fan to run on any RIDGID 18V battery or any extension cord to keep the drum fan running even longer. It features an integrated cord storage and ha.