Whirl/Wet Dust Collection System is manufactured using a patented fabrication technique that radiuses welds so that material cannot accumulate in the unit under any condition. Unit's 100% polypropylene construction makes it structurally strong, easy to wash down and highly resistant to mechanical damage from forklifts and other plant equipment. System is suitable for all applications that generate dusts larger than 2 microns. It is also ideal for use with hygroscopic dusts that can cause agglomeration or blinding of bag collectors. Tri-Mer Corp. 1400 Monroe St., P.O. Box 730 Owosso, MI, 48867