application the suvidha didw centrifugal fan is designed to handle large volumes of relatively clean air as required in heating, ventilating, and air conditioning systems and many industrial air supply and exhaust applications. the sae is constructed with a staggered best wheel for improved sound quality and higher efficiency ratings. our wheel is continuously welded and statically and dynamically balanced on precision electronic balancer to a balance quality. performance : airflow from 1700 to 304000 cmh, static pressure : 15mm to 80mm wg