The PROfilter 45s is manufactured by Atmosphere with only the finest TC940 virgin 3mm grain sized carbon. It will effectively remove 99.5% of odors and is rated for continuous worry-free operation. The Pro 45s has a diameter of 7" and a height of 18" and should be used in conjunction with a 4" Vortex Blower. The PROfilter 45s can be used for commercial or residential applications. This filter is NOT reversible like several of the larger PROfilters. The PROfilter 45s can be used for commercial or residential applications.