Ventilation box

TBSB type ventilation boxes designed for air supply or extraction.
Manufactured in galvanised steel sheet and internally coated with highly effective thermal and acoustic insulation with B S1 D0 fire rating in accordance with UNE-EN 13501-1.
They incorporate a single-inlet centrifugal fan with a backward curved impeller. The fan is driven by a pulley and belt transmission with a motor located inside the box.
The motor is mounted on a sliding motor support to facilitate the tensioning and alignment of the transmission, outside the air flow.
The TBSB-F model can be used for dual purposes: conventional air extraction and/or emergency air extraction at 400°C for 2 hours to work outside the risk area, with a fan approved according to UNE EN-12101-3:2002 and CE certified.