The Original Can-Filters are designed for the control of VOCs, odors, and other gaseous contaminants. Built with the same proven packed bed design and pelletized virgin activated carbon we've used for 30 years, this line of time tested activated carbon air filters sets the standard for long life, consistent performance, and low-pressure drop. Rated at a conservative 0.1 sec contact time, the Original Can-Filters provide excellent value and confidence.