The Rosenberg-Zero boxes are used for ventilation of apartments, warehouses, factories, toilets, bathrooms,
locker rooms and more. The extremely flat construction makes them ideal for installation in suspended
ceilings. The very low noise fans can be installed in any position.
Casing is made of sendzimir sheet steel as sound absorbing construction. The covering lid can easily be
unscrewed to gain access for cleaning and maintenance. The motor is removable together with the impeller
and spiral scroll.
Z…E / Type Evolution
is equipped with 40mm thick rockwool plates
Both types of impellers are balanced dynamically and statically together with the external rotor motors at
two levels according to quality level G2.5/G6.3 DIN ISO 21940-11.
Zerobox Revolution: with backward curved impeller
BG 125/160/250/315/355/400: made of plastic
Baugröße 200: made of galvanized sheet steel
Zerobox Evolution: with forward curved impeller
BG 315/355/400: made of galvanized sheet steel
Rigid folded spiral-seam ducts (Spiro), flexible aluminium or plastic ducts with standardized
diameter can be used. Zeroboxes can be installed in any position. If the Zerobox is used for
several floor levels, the local laws on fire protection have to be observed.