Features

Centrifugal fan with sound-absorbing casing. Sound absorbing casing from galvanised sheet steel with spigots which fit standard duct sizes. Acoustically lined with abrasive resistant 50 mm thick mineral fibreboard. Removable lid. Easy access to motor scroll and impeller set. Swing-out motor and impeller. Highly efficient backward curved centrifugal impeller made from polymers. Dynamically balanced to class G 6.3 DIN and ISO 1940 T.1. Totally enclosed, single phase external rotor motor with built-in thermal contacts, maintenance free, low-noise sealed for life ball bearings, speed control by voltage reduction.