Not sure which fan speed to choose?. [High Efficiency Air Purifiers] Breathe in the fresh air with large room air purifiers that cover an area up to 2200 sq.ft in just 1 hour. [Fragrance Sponge & Washable filter cover] The top of the air purifier is equipped with an essential oil cotton pad, you can drop your favorite essential oil, which can help you sleep or refresh yourself.
eBay