Originally from the Netherlands This multifan is suitable for close house chicken coops with a maximum cage length of 120m This blower has a higher wind speed than the chicken coop blower in general Multifan also has a lower amperage than other blower dynamos so that the chicken coop's electricity operation will be more efficient. Multifan with type BR12 has advantages compared to type BR 10 that is: - Can be used in broiler and layer cages - Has wider propellers (BR 10: 19.5cm | BR12: 22.5 cm) - Has a fan pulley bearing cover - Has an Efficiency on the dynamo of 82.7% Dinamo Multifan Cone Fan 50" Specs: - 50Hz - 1410RPM - 1.1oW - 4.7A / 2.7A