minka-aire f524-cl roto 52 inch ceiling fan 3 blades in coal finish minka-aire minka-aire f524-cl roto 52" ceiling fan 3 blades in coal finish. the roto ceiling fan features a sleek and contemporary design with a classic industrial look. well edited and an impeccably executed design features a slight "fold" construction along the length of the blades to increase the flow of air. a perfect marriage of form and function.