Low-profile ventilation box, for installation in false ceilings. Reduced noise thanks to the acoustic insulation of the walls. ErP-compliant thanks to the energy-saving EC fan. Designed for standard ductwork with circular connections. Easy maintenance due to the large service door.Low-profile ventilation box, for installation in false ceilings. Reduced noise thanks to the acoustic insulation of the walls. ErP-compliant thanks to the energy-saving EC fan. Designed for standard ductwork with circular connections. Easy maintenance due to the large service door.