Usage:venlitaion system in poultry&livestock houses. Parameter: itemdescriptionsizeair volumeblade speedmotor parameterweightHLVF00424-inch fiberglass box fan (galvanized frame; fiberglass blade; plastic shutter W750*H750*T405mm9800M3/H700rpm0.18kw(0.24horsepower) 360V;0.72A;50HZ 890rpm Protection grade:IP44 31kg (68.4lbf) Installation:in the wall