Ventilation box

TBD 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 double-inlet centrifugal fan with an inserted blade impeller. The fan is driven by a pulley and belt transmission system by a motor located inside the box.
The motor is mounted on an adjustable support to facilitate the tensioning and alignment of the transmission system.