Fantech's CVS fans have been engineered for installation in areas where space is limited. They are a popular choice for use in areas between floors in apartment buildings or high rise office complexes. With Fantech's CVS models, several exhaust points connect into one centrally located fan without the use of adapters or transitions. The motorized impeller is both statically and dynamically balanced as one integral unit, for vibration free, quiet performance. With multiple exhaust points going into one fan, wall or roof penetrations are kept to a minimum. Choose from models with two or four ventilation points providing 245 CFM to 404 CFM of air movement.