* Orbit Fans is specially designed for residential and commercial ventilation, cooling, indoor air circulation applications, e.g. houses, apartments, shops, churches, gym, offices, restaurants, warehouses and school halls, classrooms, etc. * 16”/400mm and 18”/450mm for selection. * Full metal construction for vibration free and stable operation. * Well balance designed fan blade gives powerful air velocity. ( ORF1-40M, ORF1-45A : with metal blade / ORF1-40P with plastic blade ) * High performance motors for durable applications and with built-in thermal cut-out for safety operating. * 3-speed switch provides low-med-high air flow .