Light version, supported on mounting feet(to be ordered separately as accessories).  Ball bearings on electrically conductive rubber shock absorbers, inside inlet spiders.  Available from the size 180 up to the size 560.
The mounting feet can be fixed on the scroll sides, with screws, in three alternative positions, to allow installation with orientation 0°, 90° or 270°, as defined in Eurovent 1/1.
