For sale is a Liberty Model Max8000-VSC Commercial Air Filtration System. 47-1/2" X 23-5/8" Front panel. 14" Overall depth of complete unit. 6" Depth in front of mounting flange. 8" Depth behind mounting flange. Uses standard 20" X 16" X 1" replaceable filter elements. 1/60/115V Single phase AC input at 4.2 amps. Variable speed fan with adjustment potentiometer. (2) Identical units available.