All mild carbon steel construction. The filter chamber is 48" diameter X 96" tall. Holds 21 pleated cartridge filters, side-mounted filter access panel, and air header. Tandem 6"Ø inlets installed with pneumatic butterfly valves for static pressure control. 8"Ø flanged outlet with sleeve adapter. Bolt-on bottom hopper with access panel having an 18" X 40" flanged particle discharge. Assembled overall height is 154". Includes complete set of cartridge filters.