Ceiling Filter TWB-2 series have the features of high efficiency and super-long service life. It’s processed by super long and anti-broken synthetic fiber and high quality water resin. Because of solid adhesive application, layer by layer intensified fiber density, and terylene of high performance, the TWB-2 series do not only block and absorb the dust molecules more effectively, but also keep the air more clean, and distribute air flows evenly in the whole working space.