This is the TroposAir Duet ceiling fan. It features duel caged fans that are propelled in a full rotation around the central light fixture by a gyro effect. Motors can be angled and locked in at almost any position that meets ones need for the airflow pattern and styling. Each fan has a 15" span, surrounded by an 18" diameter cage. This fan is a true conversation piece that may be used outside on the patio or covered deck, or inside the rec room and any other interior space.