Vent-Axia Lo-Carbon T Series Wall Extractor Fan utilises a low energy DC motor, developed to improve performance, lower running costs and maintain T-Series’ rugged reliability. Designed to fit directly into double brick, solid and cavity walls. Developed to improve performance, lower running costs and maintain T-Series rugged reliability, designed to fit directly into double brick, solid and cavity walls. For thicker walls additional liner sections are available. Lo-Carbon T-Series wall model provided with internal and external wall frames which fit flush with both faces of the wall. Conduit entry is provided for concealed wiring.