The ROOF-CMV series is the vertical flow version of the classic ROOF-CM. The upward-flowing suctioned fluids reduce noise and odour nuisance problems for homes located horizontally to the fan. The choice of materials, including the ABS ‘tank’ and the galvanised sheet metal cap, make the ROOF-CMV a robust, reliable and weather-proof product, qualities not common in the panorama of vertical-flow towers.