This 20" battery-powered PPV fan features a 20" blade size (508mm), and measures 24”x24”x10” (610mm x 610mm x 254mm). It weighs 59 lbs (26.8kg) and has a maximum CFM of 10,200 AMCA value (17,340 m3/h). The battery is a Li-Ion and has an average runtime of 45 minutes at 10,200 CFM (17,340 m3/h) AMCA or 3.5+ hours at 4,000 CFM (6,800 m3/h). It can reach full charge in 3 hours or less with no memory and has a battery cycle life of up to 500 full discharges, meeting industry standards. The fan can run on battery or AC power with seamless automatic switching, and has an Ingress Protection rating of IP-66. The sound level is 84 dB at 10