ITEM 3351: MICRO AIR CARTRIDGE PULSE JET DUST COLLECTOR MODEL PR4: UNUSED UNIT. 1164 SQUARE FEET OF FILTER AREA. BUILT APRIL, 2002. SERIAL NUMBER 50781. FOUR CARTRIDGES. COMPRESSED AIR PULSE JET CARTRIDGE FILTER TYPE. CARTRIDGES ARE 12” DIAMETER X 30” LONG. DUST PAN IN BOTTOM. TIMER CONTROLS INCLUDED. NO FAN. |