Electric fans pre mounted to shrouds. These high performance racing fan shroud kits are used for various all aluminum radiators. Our shroud kits feature SPAL USA fans and all aluminum fan construction. All CFM ratings are under resistance and actual numbers, vs cheaper fans that mis state this information. our fan and shroud combo kits come in 16 in fan, 10 in fan, 14 inch fan and 12 inch dual fan combos.