BSD exhaust fan series BSD-72，Outer Size (mm)：2020*2020*450，Diameter of Blade (mm)：1830，number of revolutions of blade (r/m):300, Airflow(m3/h):90000, Noise(db):65, Power Consumption (KW): 2.2, Power Supply(V):380, Weight (KGS): 150; BSD-58，Outer Size (mm)：1530*1530*400，Diameter of Blade (mm)：1440，number of revolutions of blade (r/m):360, Airflow(m3/h):46000, Noise(db):65, Power Consumption (KW): 1.5, Power Supply (V):380, Weight (KGS): 95; BSD-1，Outer Size (mm)：1380*1380*400，Diameter of Blade (mm)：1270，number of revolutions of blade (r/m):450, Airflow(m3/h):44500, Noise(db):65, Power Consumption (KW): 1.1, Power Supply (V):380, Weight (KGS): 85; BSD-2，Outer Size (mm)：1220*1220*400，Diameter of Blade (mm)：1110，number of revolutions of blade (r/m):520, Airflow(m3/h):37500, Noise(db):63, Power Consumption (KW): 0.75, Power Supply (V):380, Weight (KGS): 65; BSD-3，Outer Size (mm)：1060*10600*400，Diameter of Blade (mm)：950，number of revolutions of blade (r/m):580, Airflow (m3/h):32500, Noise(db):60, Power Consumption (KW): 0.55, Power Supply (V):380, Weight (KGS): 55; BSD-4，Outer Size (mm)：900*900*400，Diameter of Blade (mm)：790，number of revolutions of blade (r/m):580, Airflow (m3/h):29500, Noise(db):55, Power Consumption (KW): 0.37, Power Supply (V):380, Weight (KGS): 40; BSD-5，Outer Size (mm)：800*800*400，Diameter of Blade (mm)：730，number of revolutions of blade (r/m):450, Airflow (m3/h):25000, Noise (db):50, Power Consumption (KW): 0.25, Power Supply (V):380, Weight(KGS): 30;