Laskos Wind Curve tower fans have a sophisticated profile and space-saving design that blends well into home decor. The fresh air ionizer option generates negative ions and disperses them to combat and dispel air pollution. As the negative ion levels grow, the air feels naturally fresher. Fresh air ionizer. High-reaching tower design for maximum air delivery. 3 quiet speeds. The Blue Plug. Patented safety fuse technology. Simple assembly required. E.T.L. listed. Black/Woodgrain.