The Celled Extractor Fan panels that are made of specially extruded aluminum proﬁle carcass, are available in single or double-walled conﬁgurations. The frames of the cell are made of extruded aluminum carcass. Specially cast aluminum triangle connectors are preferred as connecting elements. During the manufacturing process, polyurethane foam is injected between the panels. Rock wool can also be used optionally. The device is composed of double-suction forward curved centrifugal fans and uses three-phase synchronized motors. The device is equipped with easily operated service hatches that allow servicing in order to provide easy access to the interior structure of the device. Rubber wedges with springs are used to dampen the vibrations on the extraction fans. The pulley arrangement has clamped bushings and is easily detachable, allowing rpm adjustments. A bolted system is used to facilitate the motor tensioning arrangement. Exported ﬂexible connection systems are used between the fan outlets and cell connections.
These are used to extract polluted air from the indoor environment. They can also be used to refresh the ambient air where no heating or cooling is required. They can be available in ﬁltered or non-ﬁltered conﬁgurations as per the customer's request.