The Extract-All Polyester Chemical Adsorption Module is a high-performance, durable polyester panel filter that holds 10 lbs. of activated carbon. It's designed to adsorb small particles as well as heavy vapors and odors, including chlorine, organic chemicals, pesticides, and other harmful toxins. It's perfect for removing chemical residue from industrial cleaners, gasoline fumes, solvents, and more!The polyester panel filter is flame-retardant and offers high dust capture with low resistance. The polyester panel filter needs to be changed every 4-6 months—ideal for removing chlorine and other harmful toxins from the air. It also works great at removing secondhand smoke from your indoor environment.The Extract-All Polyester Chemical Adsorption Module is ideal for people who suffer allergies or aggravation from impure air due to pollen or even secondhand smoke exposure.This specially treated medium that’s very porous adsorbs odors, vapors, and gasses. It also catches the fine residual dust that can get into your home or office through the air vents. This allows you to breathe easier—and more deeply—while you work or relax!